So I guess you belong to the people that have 2 brain cells and you can maneuver CQB to squad so that all entities are exactly at 10 range. My apologies if my micro is not that good.
The point of Attack Move is so that your units don't get engaged in a fight you didn't want and don't go walking into their death while you were looking away. At max vision distance you can pull out, re-maneuver, or in the instance of a CQC unit coming up on an inferior unit, frontally charge them and force them away.
If you're simply taking fights with Attack Move and not issuing any orders to your unit that encountered an enemy, you're doing it wrong bud. Attack Move is not intended to be the end-all be-all of issuing a unit an order. It's a security measure first and foremost.