If the Cod players didn't score points for kills, then they wouldn't buy the game and Ubi wouldn't make a profit, then we wouldn't have ghost recon...
Conflict is a deathmatch style game and it is a good strategy to draw fire away from the objective.
For example : Me = Scout - suppressed sub machin gun, Flash bulb and a couple of smoke grenades. I've slipped behind enemy lines and cleaned up. I wait for Alfa team to spawn on me. We move on to the objective. I'm cloaked and hacking whilst my other two fireteam mates are boosting my confidence and providing much needed cover fire. Meanwhile, on the other side of the map Bravo team have some big guns and a drone keeping the enemy busy. Lets re-supply shall we.
Consider the alternative. No points unless you are near the objective... Think about it.