Very sad but true. Many parents do push their youngsters just too hard. As far as I'm concerned, once it's not fun anymore, no child should be pushed, cajoled or forced to participate in any out-of-school activity.
I take an EXTREMELY laid back approach to RG Jr.'s competitive swimming. When I feel she needs a few weeks off, we take it. I don't care one iota whether that slows her times down. Tough. If she doesn't want to compete for a while, that's fine, too. I feel that if she wants to intensify her training when she's older (she's only 9), she'll let me know--it really needs to be HER choice. I'll be supportive. At this point, she shows a lot of talent and enjoyment for the sport but not the kind of drive to get her into the pool every day, which I find to be a healthy attitude.
I really look at this sport as a long-term healthy activity rather than a road to Olympic glory. I like it so much because although she is on a swim team, the events are individual, so she is not harming anyone if her times drop because she took a break.
There are those on the team, however, whose parents push them to practice too much, as far I can see. Eventually, they will come to hate the sport and drop it as soon as they can.