@2mspris
I force my children to bring headphones for their electronics. Not because I give any fucks about the people around me, but because -I- don't want to have to listen to the same goddamn 3 stanzas of a shitty game song or whatever fucking youtube video my youngest has decided he absolutely MUST WATCH RIGHT NAO OMG. So... to all those people who have sat near me and my kids? You're inadvertently welcome!
The only time my kids are allowed to play the sound on a video game is if it's in their own bedroom (which they each have their own stuff to play on in their respective rooms), if they have headphones (but if we are in public they are only allowed to have one plugged in their ear, because I can't stand it if something is said to them and they seem to ignore it, or if they are so tuned out of what's going on around them that they fail to pick up on the things that might require their attention), or if I'm at work and not around to tell them to turn the volume off. I'm not a noise pollution from multiple sources-sort of person - it tends to give me a headache really fast.
On the other hand though, they can play rock music as loud as they want in my house.