Real problem of man I think is not being contented on what they have right now even if they can eat everyday they still not contented, even if they already have 3 gadgets, still they don't have contentment.
I think people are not beting contented when they got or did that purpose already. It's normal things for human because of the greedy.
That's is why greediness makes man not to feel contentes on what they are having right now, and also, addiction can make people not happy enough because they want to do what is their addiction just to be happy everyday. If you know how to be contented then for sure small things can just makes you happy and you will value that moment especially with family.