"he isn't entirely mentally healthy"
what masterful understatement!!
It's all very well being a legendary maverick adventurer until you kill someone (other than yourself) either on the ground or in the air. How this has not happened up to this point is something of a miracle.
Whilst I applaud the spirit of unregulated freedom that some posters get from Dr Kirk's adventures, I think Dr Kirk's tendencies err a convincing distance into lunacy.
SB