Wealth removes a number of problems yes, but there are plenty of problems left to deal with.
Even with medical bills "taken care of", health issues don't just disappear. Making love work is just as hard for wealthy people as for anybody else. And some wealthy people feel trapped by their wealth and the responsibility that comes with it. I had a conversation with a guy who had been "told" by his mother that it was time for him to step up as CEO in the family business. We are talking about a large company and this guy flies his own helicopter. I met him in Bangkok where I was staying for the time because I was just traveling around. He told me that he envied me and I got the impression that he was truly miserable because he really didn't want to be CEO of this company. If this man is happy by your definition then it's definitely different from the definition that I subscribe to.
Making love work is just as hard for wealthy people as for anybody else.
It's less clear-cut with love, but at least marriage is much easier for wealthy people - or at least, non-poor people. Divorce rates are higher among poor people, and it makes sense: being low on cash creates a new stress factor, and relationships can be broken by that.
I'm not aware of clear evidence when it comes to love, but I'd wager that it looks at least similar.
That fellow's problem is being under his mother's thumb. It sucks for poor people too. But at least if he decided to quit, he wouldn't have to wonder how he'd eat. So from this we can conclude that making yourself a slave to another person leads to unhappiness, but being rich is very good for your freedom as an employee.
Even with medical bills "taken care of", health issues don't just disappear. Making love work is just as hard for wealthy people as for anybody else. And some wealthy people feel trapped by their wealth and the responsibility that comes with it. I had a conversation with a guy who had been "told" by his mother that it was time for him to step up as CEO in the family business. We are talking about a large company and this guy flies his own helicopter. I met him in Bangkok where I was staying for the time because I was just traveling around. He told me that he envied me and I got the impression that he was truly miserable because he really didn't want to be CEO of this company. If this man is happy by your definition then it's definitely different from the definition that I subscribe to.