Greed

The Bible says that the root of all evil is the love of money, which would make greed the most dangerous of the seven deadly sins. But what about pride/ego? That seems to be even more dangerous because it leads to playing God. Maybe pride/ego causes greed. Greed, from my observations, can serve a lot of purposes - sometimes people want to accumulate more and more stuff to make themselves feel financially secure. The thing is, it never works. It always seems like there needs to be just a little bit more even when there's a whole lot. Fear of not having enough seems to persist. Pride/ego can cause people to want more and more so that they will be envied by others. Again, the thing is, does being envied actually improve quality of life? I'm just seeing a lot of greed around me these days. How much is enough?