My TT looks great on the inside, faded on the outside. I intend to use it until it is totally dead. I can't seem to kill it though.
I keep fixing what goes wrong and it just keeps working. I'm looking at painting it and replacing/repairing the fender skirts, etc. next year I may replace the rubber roof.
It doesn't leak, and it doesn't stink, it's comfortable and tows good.
Just celebrated its 19th year. I may even get something to park it under in the next year.
Maintain it, use it, clean it, and it will likely last as long as you can stand it.
Thanks,
Jeremiah