Why do people flank so wide?

You see it in every server with no exceptions. Either you’ve capped middle or lost it in the beginning and everyone is fighting in the 4 grid squares of the active sector. 10 minutes later though, squads have shifted north and south and leave the front of the attacking point undefended. My question is why does no one think to stay in front of the point and keep pushing it? Are people that averse to fighting/dying that they’d rather walk 5-6 minutes without seeing anyone just to try and spawn behind?

This is specific to warfare, offensive is a free for all in my opinion.