Poor people problems:
1. No money
2. Romantic relationship issues
3. Family relationship issues
4. Friend relationship issues
5. Work-related stress
6. Insecurities about your looks
7. Physical health issues
8. Mental health issues
Rich people problems:
1. People trying to use you or scam you or sue you constantly.
2. Romantic relationship issues, that can be made worse with money
3. Family relationship issues, that can be made worse with money
4. Friend relationship issues, that can be made worse with money
5. Lack of purpose
6. Insecurities about your looks, but now you make them worse with surgeries
7. Physical health issues
8. Mental health issues, that can be made worse with money, because you thought you'd be happy once you got rich and you're not, so life becomes very depressing.
Of course I still wish I were rich, but it's crazy how people think they're lives will suddenly be perfect.
I've been at both ends of the spectrum, relatively speaking
truly the key to happiness and/or wellbeing is learning to not give a fuck, certainly not about (6). and just FYI, from your 2nd list:
(1) being sued is far from universal and neither I nor the wealthy people i know have been plagued by lawsuits. possibly thats worse in the US. i'm not plagued with wannabe grifters either, but then:
learning to do without, or mostly take on your own terms, (2), and (4), is a major help and mental health benefit
(3) a relatively small drama-free family unit is also a big mental health benefit
as for (5), not sure. Just indulging yourself in doing whatever the fuck you want can go a loooong way towards happiness, or at the very least filling the time so its passing pleasantly. shit, you're rich, you like sport, you could travel the USA throughout the entire year just doing that. what a fucking life.
(8) nah. i was happy enough when poor, other than having to manage the side-effects of poverty, so I never saw being other-than-poor as any more than alleviating the negative aspects of poverty and getting security. if you take security as the goal, and get it, you feel like you have achieved fulfillment. (8) certainly applies to some people but not to plenty others. the richest people i know are fulfilled by providing security for their children, the superficial shit is meaningless to many of them. richest dude i have ever met has given away all his wealth to his kids already, he literally doesn't GAF
the major things i have seen screwing up rich people are:
(a) divorce(s). Oh, brother.
(b) kids being failures/ addicts/problem children/ marrying the wrong person.
but of course this shit is a problem to anyone rich or poor
(c) in quite a few people, cocaine
but i strongly believe that just the security of not-being-poor is a major factor in the 'happiness' of anyone rich who grew up not-rich.