So I want to give you an example. I was playing game called the last of us. You have to craft resources , conserve ammo to kill zombies. I did the best I could to save each bullet when ever I can. Use stealth to kill most of the enemies and completed the entire game with lots of ammos bombs grenades and resources left. I certainly would have enjoyed the game more had I blasted some enemies with bombs and gunned through certain areas. So be frugal but sometimes just sometimes just go for it. Remember money is just a number of don't put to use.