*snarl* You really want an answer to your fucking stupid question? Huh, fangirl? Well, here's the reason: I DON'T LIKE HARM. I warned you at the beginning of the fic--in the first goddamn part--that I am not a Harm/Mac shipper. Harm is an immature, irresponsible, commitment-phobic asshat. Hmm... you two have a lot in common. No wonder you like him so much.
Y'know, insulting an authorial decision then praising one in the same breath must be tiring on your little brain cell. May I suggest NOT READING CLEARLY LABELED AJ/MAC STORIES next time?
Fuck off and die.
May you be blessed with many Harm/Mac breakup nightmares,