Also, a lot of travel sports becomes a social event for the parents, which to me, sounds horrible.
I know at least one family who put their kid in travel basketball, when he should probably be playing house league, simply as a keeping up with the Joneses thing. Even though there's no way they will commit to all the practice time and every weekend - they have a place up north, a place out west, and I never did find out why he missed football practice every Tuesday.
And if you aren't going to commit, it's not fair to the kid, the coaches, or the team. They tell you what that commitment is going in.