The Remus/Tonks plotline in Deathly Hallows was devasting, but I think it was interesting to explore the different sides of Remus' character, how his self loathing can overtake his compassion towards others. And you are totally right, thank goodness he came to his senses and was redeemed to return to his loving self, more good and kind perhaps than ever before. I have to admit, when Remus arrived at Shell Cottage I cried A LOT. He's always been my favourite character and after believing him to be doomed to misery, to see him finally achieve true happiness breaks my heart.

R.I.P.