We all need it. We all think that having more of it will solve all our problems and make us happy. I don't think so. Because too much of anything isn't good for us. Yes, it's nice to have enough, but there's a big difference between having enough and having more than you need. The same could be said about overeating or owning more stuff or working too many hours. Pretty soon these things that are supposed to improve your life or bring you more satisfaction, will turn against you.
Celebrities usually find this out. At first, having notoriety and wealth is exciting, but I think they soon become bored, and lose their moral compasses. After they'd spent small fortunes on houses, cars, clothes, and entertainment, some of them, maybe most of them, still feel empty inside. And the earlier these people achieve their notoriety, the sooner their lives crash and burn. No, this doesn't happen to all of them, but it happens a lot.
I had a teacher in high school who told us the first day of class, "Moderation is the key to success." She was a wise woman. I think this could apply to what we own and what we want as well. Keep it simple. Try to be thankful for what you have, not discontented with what you don't have.