Children make me nervous-- more for the fact that I don't have energy or worry they're going to hurt themselves than anything else.
They're like little sponges, though; very susceptible to outside influences-- if it's a commercial on TV or a TV show or a videogame or a family member who fights or is rude, etc.
Whenever I see a child behaving badly, I always wonder why they are like that and it makes me sad...
Are their parents paying attention to them and taking care of them properly?
Are they being bullied at school?
Are they developing some kind of mental disorder early on?
I think generally... if you're a patient, easy going person- you can learn to get along with children and the more time spent around them; the more exposure you have, the less anxious you will be.
Of course... some people will probably always be nervous around children and it makes sense... they are tiny little clones of people. Kinda creepy if you ask me~