I can deal with 1, maybe 2. Had to leave a group of 5 squeakers a few weeks ago after developing a headache after about 30 seconds. Age restrictions should matter though. You might not understand the consequences of having people under the age restrictions. Unfortunately it's the case where parents will buy kids a game that they are too young for, kid shoots people and the game is blamed for being violent when the parent is the one at fault. Also it affects learning curves when kids (or I guess anyone really and that also goes for my last point but people pay more attention when it's kids), complain everything is too hard or whatever, so the difficulty gets nerfed and becomes boring for other people.