I believe in live and let live. Obviously a person should limit his taavah, gaavah and what not and not be focused on Gashmius. However, understand that having a lot of money is a HUGE Nisayon (Im sure youre thinking why can’t I have that Nisayon? lol)You dont know why they built such a big house and frankly its not our business. It could be the wife needs it, it could be the husband needs it, it could be it was done for the sake of shalom bayis, or for hachnosas orchim…You dont know and you will NEVER KNOW. Its a good habit to get used to NOT thinking about other people except in terms of how can I help them, how can I do a chessed…
Its very important to mind our own business.
If you think about the rich guys mansion then do you want him in turn to think, look at that guy, hes so jealous, such bad middos…Theres always something to look down on someone for and its a bad middah to do so. Lets be dan lekaf zchus others and thereby live an emotionally healthy Torahdig life.