Ummmmmmmmmmm. Have to disagree there V.
It's pretty hard to enjoy splashing about as an adult on your own. In the same way going to a playground alone as an adult isn't fun.
I get what you're saying, but for those of us without children (or grown ones in Cloud's case) I recommend simply finding an exercise you enjoy rather than glomming onto a random family's splash time.
Cloud - I really enjoyed water workout. I found it an easier habit to get into than swimming because of the music and the group aspect. I only stopped when I started bleaching my hair. I really need a decent swimhat and to go back again. It's playing for adults only
But if you actually enjoy swimming then go for it - V's defintely right there, enjoy it!