I love seeing moms and/or dads with kids on bikes on the greenways. I always expect kids to do unexpected things, because their world view is very close to them - with the right anticipation, I've stopped in 4' for them before. What I hate is hearing moms and dads yell at them for not pulling over - breaks my heart.

(then there is the people who yell at their dogs - how are you going to get your dog under control by yelling at it?)