It's not at all greed. Any Money fills 3 functions:
1) Unit of account
2) Store of value
3) Medium of exchange
Money simply means that I can sell my old camera then maybe buy some pizza with some of the proceeds vs trying to find someone will accept a camera for a pizza, and then give me something that is worth the camera-the pizza for change. Money fulfills a function that allows an economy to work to some degree of efficiency.
(Psst: Wanting that pizza is greed. Wanting to get the camera is greed. Wanting to get gas for your car is greed.)
Then in your opinion wanting to live life should also be called greed.Then go kill yourself and it will also be called greed for wanting to kill yourself.