Scattered thoughts...

Some friendships don't really end; they just go dormant.
Sometimes it may be kinder in the long run to abruptly end a friendship (depending on the people involved and the nature of the friendship), compelling both parties to grieve the break immediately and move on.
Oftentimes friendships fade naturally due to circumstances. Sometimes this is kind, and sometimes it leaves people frustrated and guessing.

I attempt to be kind, or at least not unkind.

I too am disapproving of many aspects of my younger self.