I agree with Seesaw's comments.
We judge others by our own moral standards. Fortunately or unfortunately, mine are very high.
An ex-friend, who I'd met at senior school, suddenly became obnoxious. She thought she could say what she liked without any thought for other people's feelings. She blamed it on the menopause. Our break happened 16 years ago. At first I regretted it but then realised I'd reached the point where I couldn't tolerate her sarcastic and domineering attitude any longer. However, there were possibly other reasons. Being a late, only child coupled with her mother's challenging health issues as a result. Father's overpowering personality. On the flip side, due to her domineering attitude, her husband was unable to make any decisions for himself.
WovenGalaxy, it is difficult. I think as we get older (I'm 65) we're fearful of being alone. However, we now have the experience to choose our friends very carefully. Good luck!