It depends on the bar, and the part of town or people. Growing up in Houston, every Friday and Saturday night, there was someone shot or stabbed in a bar - I kid you not.Didn't you mention bars a hot spot for fights? Friends and I go all the time, and we never seen a fight break out yet. What bars have you been going to? We go to busiest bars in the region, which means we actually drive out of town to a bar that normally has 1000-2500 people in it.
One of my friends got beat up pretty badly in a bar. He and two other friends were in a joint getting some drinks. A group came into the bar and let my friends know that they were not welcome (it was 7 or so against 3). A fight broke out and my friend ended up getting smacked over the head with a pool cue. He was a bloody mess when he came by - and he had a torn scalp (another frined took him to the hospital for stitches) and lump on his skull.