The Losers didn't fully grow up and were bound to that evil force they couldn't defeat almost three decades earlier. Having kids would be the final step into adulthood for the Losers, which is something IT couldn't let happen as it needed that innocence in them to fulfill its plans.
According to It, when humans got scared, "all the chemicals of fear flooded the body and salted the meat". This is why he prefers to feast on children -- their fears are simple, pure, and powerful compared to the complex, pathological fears of adults. Basically, children are delicious.
The scene in the novel where preteen Beverly has sex with the rest of the members of The Losers Club in the sewers of Derry after defeating Pennywise for the first time has become one of the more controversial in the novel. The scene was omitted from Andy Muschietti's film series as well as the 1990 miniseries.
Beverly Marsh, the only girl Loser (played by the transcendent Sophia Lillis in the film), takes it upon herself to have sex with each of the boys as a way to help them grow closer together, unifying the Losers Club once again.
The Losers Club is the main protagonistic faction of Stephen King's novel It. They are a group of seven children, with six boys (later men) and one girl (later a woman) and they have unhappy lives which unite them.
Stan is one of the two members (alongside Eddie Kaspbrak) of the Losers Club to die, although Stan committed suicide due to his fear of Pennywise, while Eddie is killed by Pennywise.
Kersh is Pennywise's daughter.
He is also a form that Pennywise/IT uses to frighten Beverly since he is what she fears the most. It is also implied (and confirmed in the 2017 film) that he sexually abuses his own daughter. He was portrayed by Frank C. Turner in the miniseries, and Stephen Bogaert in the 2017 film.
Beverly Crusher got PREGNANT during shore leave with their secret son. Admiral Jean-Luc Picard shockingly realized that Jack Crusher was actually his son on Thursday's episode of Star Trek: Picard on the Paramount+ streaming service.
Beverly Marsh's father and Elfrida Marsh's husband. Like Richard Macklin and Butch Bowers, he is physically abusive. He slaps and punches Beverly but also sexually abuses her by masturbating over her while putting her to bed.
Following the show-down that sees them defeat the nightmare manifestation 'It', the children in the 'Losers Club' find themselves trapped in the sewer. The group's only female character, Beverly, then invites and encourages the boys to have sex with her as the only means of escaping the sewer.
Alvin "Al" Marsh is a supporting antagonist of the novel IT, the miniseries, and its 2017 film adaptation of the same name. He was the spouse of the Elfrida Marsh and the insane, abusive father of Beverly Marsh in IT.
After Bev is kidnapped by Pennywise and dragged down to his lair, the demonic, shape-shifting clown holds her up in the air by her neck and opens its jaw all the way back so she's forced to stare deep into its throat.
Throughout Stephen King's It, Pennywise is referred to as a male, but author Stephen King pulled a fast one on readers in the It book ending by revealing the creature's true form was a pregnant spider, implying that it is, in fact, biologically female.
Pennywise didn't become pregnant.
Since It is hungry, it goes for the first thing that it can eat, such as Bill's brother or the man at the beginning of the book. In the books it describes that It prefers feasting on children because they have more vivid imaginations and are much easier to scare. Adults are described as “complicated”.
Beverly's father can't see any of the blood in the bathroom. On one level, this is because he's an adult; a major theme of It is that the innate power of childhood and ability to remember childhood fears serve as a crucial weapon against It.
For … reasons, Beverly Marsh, the only girl in the group, tells her six friends that they need to each have sex with her in order to codify their bond and, somehow, show them the way home.
While no incident of sexual abuse occurs in the film, each scene between Beverly and her father is laced with the understanding of what he wants, and what she knows he wants. Then, the dam breaks: Mr. Marsh chases Beverly through their stark apartment, pins her to the floor, and attempts to abuse her.
Some spoilers for It (movie, 2017) are below.
His phobia seems to stem from a mental illness his mother suffers from known as Munchausen syndrome by proxy, which manifests in her relentless “worrying” about his health.
The first time Pennywise comes to Bev, an explosion of blood covers her entire bathroom. Despite her screams, her father is unable to see it, leaving Bev (and the Losers Club, depending on the version of the story) to clean it all up. And so the blood becomes a representation of the fear of her impending womanhood.
The blood suggests not only the blood and bruising brought about by her father's physical assaults, but the fear Beverly has about her father's violent outbursts getting worse as she approaches maturation.
And if his victim believes him to be powerless, he will become powerless. And so the group figures out that their best bet is, essentially, to bully the bully: They mock Pennywise, telling him he isn't scary. Humiliated, Pennywise begins to shrink, transforming into an almost Benjamin Button–like, melted clown-baby.
Throughout the book, It is generally referred to as male, usually appearing as Pennywise. The Losers come to believe It may be female after seeing it in the form of a monstrous giant spider that lays eggs.
Kersh is Pennywise's daughter.