I can't think of anything I've bought recently (other than maybe the farm equipment that actually makes a living) that warrants its purchase.
At my stage in life it is more would I like it? Do I want it? Can I afford it? Done. Edit: thought I better add "at least within reasonable limitations".
Otherwise it is just about leaving an imheritance my kids can waste. Might as well waste a little of it on myself and give somebody a job making it.
But as long as a person is raising a family, I realize justification takes a different form.
