Until I joined Lemmy I would have agreed with you.
EDIT: Unless you are talking about the litterbox thing, I have heard this brought up as legitimate discussion before. I quickly squashed that conversation, but there are (stupid) people out there that believe it.
While it's true that it would be better for them in the long term, it's also true that some people prefer convenience.
I have a coworker that pays the power company extra each month so that if her water heater dies they'll replace it for her. Why the fuck does the power company offer this service and by the time she needs one she will have more than paid for one.
Lots of people don't change their own oil in their cars, it's easy and cheaper, but people don't want to do it.
Coffee.... that's all I'm gonna say on that topic.
Renting is a service some people want, just like some people want to live in an HOA.
More people would probably buy a house if they could just pay the mortgage, similar to a rent to own setup, but that's not an option available to most people.