Poverty change people, I never thought as much until i came back from abroad.
I visited my old neighborhood while growing up to see some of my guys in the past, I observe that most of them have changed to something else, from their behavior to how they sees life, and to how bittered they are. Though we still get along well base on the kind of person I am, I don't even sees myself like the rich guy they take me for, but I also feel their pain because life haven't been fair to them, a caring and loving guy before is now always bittered, the best I can do, which I did was to introduce them to Bitcoin and cryptocurrency.
Poverty is a disease that changes people.
i agree poverty changes people imagine a years back a friend of mine i used to assist during difficult and tough times but once him earned alot of money and being successful the attitude towards him changes him keep on behaving strange that's what I really understand about that poverty can change someone easily.
Your case is different, your friend was either humble because of poverty and had no option than to be humble but once his bag was filled he forget what it was like to be poor and became stingy, and to me I hate such persons cause they woudl forget all the good things you did for them and once they are rich theh act like you ars not their friends again, so bad bro.