Well, that's my opinion... Everyone has its own opinion about it... I find decentralization and good token distribution as a top priority, and delegating ALL your HivePower is doing the complete opposite of that... It is centralizing power and centralizing token distribution...
Just to clarify, I'm not 100% against HP delegations... There are projects that are worth support, but not with ALL my HP... I try to not go over 10% delegations of my total HP... But, if you check other comments, people have different views about it... and that's fine too...