excel,
Never been on a jet ski. I imagine people buy them for all the same reasons they buy speed boats which is to have fun.
I have been on a jet ski, and in a speed boat.
To me, they are both kind of like riding a scary ride at the fair, or an amusement park. It's really fun a few times, But I don't care to have a roller coaster or a log flume in my back yard.
But, like I said, I can see a snowmobile or a four wheeler as having a purpose other than fun.
Have fun,
Phil