I think you're right. I think they'll all last a long time. However, my grandparents are in their mid 70's and just opened their pool again this year. I think you may want to swim when you're 60. 60 isn't that old anymore.

In any event, I bought mine for my kids mostly. I'm not so interested in swimming in it in 30-40 years from now. Yet, one other thing to think about is the chance of blowing out the sides and sending 1000's of gallons, perhaps tens of 1000's, of water in my house, my barn, my neighbors place, or any other place for that matter. I'm my case it's in the back yard and would wash right down into our 1 acre pond. No big deal. Not all places are set up that way. I had a relative who lived on a hill and set his up above the house. You guessed it. Side blew out and it all rushed in the siding door. It's just not worth the agrevation & mess down the road.

gpshemi