Why are people so against SBMM?

I've been playing battlefield since BC2, mainly rush, and my main issue with the game always has been people not going for the objectives. Every. Single. Time, 16 players in the team and only 6 are actually pushing while the other 10 sit back and wait for them to open a path to push. I am an agresive objective player myself, and play for the win, dont care about my k/d or score, just trying to push the team to the victory.

I prefectly understand that there are casual players who just want to spawn, mess around at their terms, have fun and leave, which I respect, its your game, you payed for it so you play the game as you see fit.

SBMM fixes this issues, casual players get paired with and against casual players, the more skilled get paired against similarly skilled players.

The most fun matches I had, were the ones where both team are good and are in a constant turf war for the objective untill one makes a mistake and either loses the progress or the objective.

We could have server browser for community servers and SBMM for official ones, I belive that would be a win win scenario.