With me, my original Sim, I wanted him to feel like he only can survive with the clothes on his back. Yet he was able to make a profit from his Ghost Hunter work. Decided for him to go to China, seeing how ridiculously cheap it is compared to real life. He made more than he did with his Ghost Hunter job, which made the job almost pointless to keep, but I kept it anyway since I liked the career.
Then he got married to a rich Sim (not part of my plan. Seriously, didn't know she was rich) and inherited her fortune, giving him 4x what he originally had. Much later, moved into a smaller house but had $140,000, and was considered 'Rich'. Apparently, having $100,000 or more is considered being rich.
Now, the money is flowing in. My Sim hasn't worked (neither does the wife) because there's just so much money, and as I said again, makes his job a bit pointless. He still gets paid a $2,000 stipend, from working or not. Which seems unfair to me. You should have to at least do one job to qualify for a stipend, yet the game doesn't see it my way.
I personally don't want to live in luxury. Just looks too over the top. I like things simple, why the wife is the maid instead of hiring one.
I personally don't care to own properties. Again, I don't like feeling rich. Feels wrong. Whoever said "money can't buy you happiness" is absolutely right.