I'll bet I've shot 75+ K rounds in competition that I loaded, out of a match AR in 223 and never crimped the first one. Never had my gun have a FTF or failure to fire due to a round that tied the gun up due to bullet creep... Waste of time in my opinion...
There ya go... we loaded up to 20K a year for Carolyn and I and a couple of juniors here and there... from about 89 till 2004.... thats a few rounds.
I don't even know if I have a crimp die for a 223.... full case of powder, control neck tension with a collet the right size.