[CORattler]

Not all of us are able to afford a new RV every few years. For many of us retirement means a fixed income with limited resources. For those lucky ones who can afford to get a new RV every few years, good for them!
We are happy with our current rig (it's paid for) and we make mods to fit our lifestyle and comfort level. We also maintain it to our standards.
Those who full time certainly put more demands on their rig and have different requirements.
I guess the take away here is that as long as you are happy with your rig and it meets your needs/wants, just enjoy. If you are inclined to get a new rig that better suits your needs/wants and you have the resources to make it happen, go for it!