5 of those a week is only 30 minutes a weekday. What's the problem with that? Hidden hours in preparation and transportation? 30 minutes is not even a tenth of a school day.

When they are 5, it's the lost time in transit and gaps of wasted time.

When they get older there's a 4:1 prep:activity ratio. If your kid is going to play majors or minors in little league, you're doing multiple leagues, workshops and practicing. When he isn't doing that, you're dealing with little league politics.

Multiple activities means you never eat dinner at home, may not see siblings for days as well. You also never see your spouse. If your 7 year old is at dance until 7, you're stopping at chipotle and not getting home until 8. Your spouse is tucking in the 5 year old, who needs to go to bed at 7:30 to wake up at 6 to get to before school care.