No, you're ruining the game for others.
I do agree that there shouldn't be so much hostility, but if you queue for a battleground, you accept the objective of what ever battleground pops. In the same way if you sign up for a dungeon as a healer, you have to heal. You can't suddenly turn round and say 'lol nah I dps m8'.
There's other content designed for you to 'smash face', namely arena skirmishes. That's literally all they are there for. They even disabled healers from 2v2 skirmish so you can face smash even quicker.
Again, battlegrounds are about objectives, and it's insulting that you think your own time is worth more than others. People have sat in that queue for x amount of minutes (bigger deal for Horde players currently with 10 minute queues), for you to dick about. It's not exactly fair is it?