That just shows that you have matured further as a hunter than you friends at school. Some people wont even shoot a 3 1/2 year old buck, because he is not considered a fully matured deer. No you are definately not a wimp, I personally wont shoot a Doe that has fawns with her because the fawns are less likely to survive once their mother is gone. I also try to refrain from shooting younger bucks, but everybody gets an itchy trigger finger every now and then.I commend you on your decision not to shoot the fawn. Job well done!