I used to carry nice wallets but the problem was they would end up stuffed with all kinds of nonsense I don’t need. So I changed strategy a few years ago.
Now I carry the smallest I can find – actually just a business card holder sized – to force me to choose carefully what goes in it. Not even room for $$ so I carry a money clip too.
I’ve been really happy with this combination, makes my life sooo much simpler somehow.
Personally I dream of the day when the cell phone eliminates the need for cash and cards…that’s my own personal utopian dream…