That's right, and they put those lives ON THE LINE to protect the bomber crews depending on THEM as a first line of defense ... They weren't there for the scenic views ... or the "fun fights".
Your examples of using close escorts to try and prove your point isn't a very good one for number of reasons.
The simple truth is, fighter escorts really didn't work out that well. Something the Germans learned during the Battle of Britain and something the USAAF was to learn later on in the war.
The main problem is that the escorts were initially in a close escort formation with the order to never leave the bombers. Unfortunately, due to the close proximity of the escort formation, it was unable to prevent an intercepting group from making high speed head on passes and since the escorts had to stay in close formation, they couldn't prevent multiple attacks by the same intercepting group.
It wasn't until the 8th AF rescinded the order to stay with the bombers and allowed the escort fighters to free roam in front and the flanks of the bomber stream, with the intent of intercepting the Luftwaffe fighters before they were able to form up and attack the bombers. For example, it took at least 10 miles of undisturbed flying for a formation of intercepting fighters to form up for a head on attack against the bombers, something that was almost impossible to do with Allied escort fighters free roaming ahead of the bomber stream. The most effective escorts are the ones you don't see from the bomber stream since they are intercepting the attacking fighters before they get within visual range of the bombers.
These fights often degenerated to nothing more than swirling planes in a dogfight. Read Bud Anderson's book if you think otherwise.
ack-ack