I feel you. Games are meant to be fun, and people usually take them way too seriously. That's the worst part about online multiplayer games. Trolls and jerks are far too common in the gaming community. I personally just play for enjoyment, and I can't understand why people freak out so much.
About the winning thing, yes it is nice to win every now and again. What's worse than losing however, is dealing with poor sportsmanship. Trying your best, and having fun is important. People need to just have a good time playing, and need to stop getting so aggressive over vidya games, I tell ya what. Focus on having a good time, and stop spamming the chat with interwebz slang. (Get rekt scrub, m8)