You would see some extra wear in a Glock 23 say over a Glock 19 after thousands of rounds. Some folks see that as a reason to go with a 9mm. I see the gun as a tool. If the tool has an advantage over other tools except it may not last as long, i can budget for that. I really really reslly never want to get involved in a deadly force shooting and train to stay out of one, and have managed not to get in one of 30 plus years of CC, but if i do ever get involved in a shooting, it will be with a substantial caliber.
Besides, mine has pressure release valves to keep it from blowing. Lol