Lots of mature replies here, but they're not exactly representative of what I actually see happen on these forums. xD Perhaps folk could stand to look at themselves a bit more honestly.
I know I can have trouble letting arguments go. Usually I'm not actually trying to convince the person I'm talking with; I'm more interested in making sure that the people reading (other forum-goers, but especially VR folk) see that not everyone thinks the way that person thinks. There's a stereotype in this community about who should be excited about Pantheon, and I know I don't fit it.
I do try to step away from arguments when I feel myself just getting way too invested. It's hard, though. xD