Is it weird that children still seem to like me now that I'm 20?

I actually did read the entire "question" and I do not think you should be worried at all or think its weird. Children have a way of picking up on who likes children and who doesn't (as well as who can relate to them) and they naturally gravitate towards those who do. Sounds like its nothing more than a girft you have and a sign you'll be a great mother one day!