I've had my 22' Lazy Daze on a Chevy G30 for barely 9 months. But it is 23 years old now and in gorgeous shape. We are the third owner.
The first owner kept it 8 years for 120,000 miles. The second owner kept it alongside his house for 14 years and barely put on 12,000 miles. Both took immaculate care and didn't change a thing besides adding solar panels round about 1996.
We will be replacing the carpet for vinyl or wood floors and I've added a flat screen 12v tv where there was none before.
I don't know how long we will have it but it's certainly not ready for retirement for many years yet.