Did you ever think about the fact that many of our friendships are 'accidental?' For most of our lives, the people that we meet are defined by our social context at the time. As a result, as we reach our 50s, we often find ourselves with people in our lives that are actually causing us more harm than good.
My 50s started out a little blah -- thinning hair, sweaty nights, spreading waistline. I tried to write a book about it but felt it would be cruel to my readers unless they were insomniacs. I was bummed at the beginning of this decade, and I think those on the 'other side' decided to jazz things up.