You are NOT Shroud

Eh. Some people do it because they think they're superleetskills sure but other people do it due to horrible teammates and I don't mean teammates that are bad at the game I mean teammates who pick up literally every damn thing in sight regardless of whether they need it or not on first landing and leave you running around like a headless chicken looking for a gun while you're getting shot at so you end up feeling like you HAVE to beat your team to the next building/supply bin or whatever just to be able to get something decent.

So with some (not all) While it may look like they are the "I got superleetskills yo" type, chances are they're just trying to get to the loot before the other two so they can stand a chance.