Mopars have been one of my top investments. I can looks back on several decades of all the friends I've made through my cars, shows and cruises I've been to, satisfaction I've gotten from doing a repair or upgrade, and more.
Financially sure, if I'd spent all my car budget investing in mutual funds I would have a higher net worth, but unless you are having trouble making ends meet, why worry too much about net worth? I have stock market investments and they give me stress from taxes, and I can't say I've ever derived any fun from stock market investments like I have with cars.