Sheesh, keys in one pocket, money in the other, with the bills in a little money clip. It's a no brainer, R.
The only small difficulty is when you have to put a credit card receipt in your pockets, but if you fold those and slip them into the money clip with the bills, it's not a big problem.
I'd rather have bills than coins. They're lighter. (Imagine that.)
Also, unless you keep your wallet in a front pocket, it's easier for a pickpocket to steal it. That's why I never put bills in my wallet. Credit cards can be canceled, but money is gone forever if stolen.
Mitch Henessey (singing): Putting the keys in my left pocket. Dah DAH dah dah. Gun in the right-hand side.
Samantha Caine: It makes a bulge, people can see.
Mitch Henessey: Ya want me to stick it in my pants and shoot my damn dick off?
Samantha Caine: Now you're a sharpshooter?
Also, unless you keep your wallet in a front pocket, it's easier for a pickpocket to steal it.
That has never been a problem for me. My past has not been really clean, and I can spot and am aware of criminal activity. Knowledge is power.