Because being wealthy does not guarantee you happiness.
Being wealthy buys you time and energy, to focus on whatever you want. Whether the things you chose to spend those in make you happy or not depends on you and them.
Don't own a house? Sit down with a banker (a real banker, not a mortgage broker) and work out a plan to get into a house.
Another option now is to buy tokenized real-estate, so you can get exposure to an asset class even if you don't want to or can't purchase a property outright.
The thing that stops most people is they fact that it takes twenty years or so for this to start showing significant gains. You have to be ready to play long ball, this won't show immediate results.
Yes, and the key thing is that instead of you working for the money, the money works for you.
It's a real pity schools are so utter crap at educating people about the few basics that are needed to dramatically improve your life chances.