I've been thinking a lot about him lately. I guess the fact that I don't really have any experience living through Best' performances/career made him a bit depersonalized in my eyes — I only see him as a player, and as a legendary symbol of the club's glorious past. It's easier when it's a historical character that you only retrospectively develop any kind of an admiration for etc.
But Giggs is someone that I watched growing up, watching him grow alongside me, mature and eventually retire... It's a completely different emotional experience. Then there's also the fact that Best obviously had a lot of issues and it was always evident while Giggs had a pretty much perfect image — in his younger days he looked and behaved more like Best, but after that it looked like he became more and more like Bobby Charlton 2.0... And then, out of the blue, you get all that information about how Giggs actually lived his life.
P.S. just wanted to specify this — I'm talking about my own feelings towards those players and the relative difference in perception of two very similar situations. This doesn't in any way mean that I'm making excuses for Best's behaviour.