Hah! How about....real men test, wimps System.out.println in mains!
The one thing we harp on about (in an informative, educational, and highly relevant style, needless to say) is that testing is a tool. Rejecting it is like refusing to use a debugger and instead using System.out.println to debug. Yes, you can do just fine, but why choose to be so inefficient? It'll make you produce better code without much of an overhead (if you do it right), and you'll feel a lot less sheepish when people report bugs.