One thing I've really noticed now that I'm not spending money: every single advertisement I see is for something that is not necessary. Yes, food is necessary, but I never see advertisements for things like asparagus or berries. We don't NEED to be tempted to buy things required to survive. Everything else is optional. It really is. I don't know why this never fully occurred to me before.
I'd elaborate more on this thought process, but the events of the week have left me absolutely exhausted.