Who am I to judge?

Curiosity has got the better of me recently, I have been nosily trying to dissect something that I didn't truly understand (and didn't want to fall into the same pitfall trap as someone I know) but after looking and trying to look for reasons, and then finding the reason and being overwhelmingly shocked about it, I have decided that the best thing to do is to leave well and good alone. I don't know whether it was the best thing to do in heinsight to look for the reason as it has done nothing for me (not that it should have) but I realise now that I am more naive than I thought.

I admired someone who has totally turned their back on everything they once believed in. I am not going to pretend to even understand this, how someone can do a 360 degree turn and come to a different point and leave something that was so good behind. I say 360 instead of 180 because it was such a turn that it needed more than that to underline that own fact.
All I can think is that someone needs a bit of help, and by that I mean psych help. But as my ittle suggests, I am not one to judge, I can just offer my own musings as to why. I thought before that finding out would help me to lay the situation to bed, it will take time to do this as it just wont sleep just yet. I just wanted to apologise really, for thinking things and thinking I know better.