Not yet because you only want to install on a newer roof otherwise you pay a lot to uninstall/reinstall on roof replacement. Relative to price of a home, they

Not yet because you only want to install on a newer roof otherwise you pay a lot to uninstall/reinstall on roof replacement. Relative to price of a home, they are cheap, under $10k without storage. People spend 2-5x more on a kitchen or bathroom cosmetic remodel. If you need financing, you can use a HELOC. The break even is like 4 years. Your statements are fairly hyperbolic considering something like 60% of Americans own their home, so it can't be impossible.