It's a valid concern, OP. In some cases, you can bet that there is an abusive parent milking their child for money like a disposable farm animal. Some people are just bad, even to their own kids. One webcam cutie was actually reported to the police, probably by her own fans, because she was on at unnatural hours, acted drowsy, and was developing huge bags under her eyes. The mom was arrested and admitted to forcing her daughter to work so she could get cash.
Childhood is also a highly impressionable time. I've heard it said that those who are exposed to sexuality early are much more likely to be attracted to children themselves. Almost like the pedo meme perpetuating itself. Same with child abuse, for that matter. Although mainstream academia, lawmakers and media do not make the distinction. If you abuse a child (meaning violently, or emotionally), they will be more likely to treat their children a similar way. You'll notice blacks nearly all beat their kids too much, whereas whites are perhaps a bit too gentle. It's as if impulses are instilled in them during development that are difficult to resist even as adults.
Anyway, on to the other side of the coin. First of all, attention feels good, so does feeling pretty and wanted. Second, it also gives a good feeling when you break the rules and norms that society tries to impose on you. In other words, it's fun to be naughty. Finally, being sexual is fun in and of itself because it makes your nether regions feel great. All in all, you need look no further than the webm thread to find girls who have discovered these things and exploit them on their own. I do not believe it would be a bad thing to explore these feelings physically with them either, if you know what I mean.