I would personally hate it if weapons weren't available. The game would lose a lot of its appeal. Yes, I often lose matches due to someone spawn-camping me with the nunchucks or 1000T hammer, but I like the randomness of them, the goofy things that sometimes happen, and the fact that they can completely turn a match around (which is what you don't like).
I like to win, yes, but I don't have to win. If I lose a match but it was a good and close fight, then I'm personally happy about that - I just enjoy the experience. Every weapon has a vulnerability also, so once someone has a weapon it's not necessarily a guaranteed win, provided we're good enough players (I'm usually not).
@Igor, I didn't realise there was an option to disable them in Custom Match, but if that's possible all we'd need are some filtering options for Quick Match. It's all completely doable. This might be a better approach than just turning off weapons for a week and upsetting those that like them. Weapons are a big part of the game and its appeal for many.