Board Thread:Warhammer 40k General Discussion/@comment-6134883-20130423145616/@comment-7186329-20130504152038

No. The primarchs were expencive and vaulable tools. Braking them after the job is done would have been a waste. When the need for them arises, they can be released from `captivity` and send to deal with the problem. I wonder hot The Emperor would have reacted if the primarchs refused to retire once the job was done.