Depends on the game really.
Like for example tonight, I just had a fight in Demon`s souls in 4-2. I started heading up toward the entry way of the zone and there stood my opponent. It was a hilarious fight because we were both heavies. Massive plate armors. He fought with a large and long sword and I fought with the massive Dozer Axe In a narrow corridor where half of our swings were negated by the walls. We kept charging and retreating each other, and even healed at the same time. I managed to win just barely simply due to having more stamina to get 3 swings in a row in while he was down. Best mirror match ever~!
After the fight the guy sent me a message telling me how funny the fight was and that he really needed that.
So it depends on the game, it depends on the people and depends on the circumstances.
Might I suggest either not getting so worked up over a video game, or try playing games that aren't centered around pure competition, or find a game with a community that can deal with a little levity immersed in all the seriousness.