Certainly, most of the time. Although injuries are also common, and you're not stronger once you've damaged something inside.>harder to kill
This is just silly. Mortal hand to hand combat is not a risk anymore. The goals here are primarily social and psychological. That's not necessarily a horrible thing, but at least be aware of what you're doing.>more healthy
Possibly, but not necessarily or certainly. As far as longevity and fitness are concerned, strength and hypertrophy are not high on the list of priorities. I'm not trying to deter you, but just don't be oblivious to the real necessities for your own wellbeing. Bodybuilding and strength training are hobbies, not identities.