Very, very good piece of advice:
If what someone does doesn't hurt you, let them be who they are.
I am rarely disagreeable, but there are limits.
I was talking with my parent's neighbor, and he pointed across the street to a man doing Tai Chi on his back deck. He made fun of the man and said he should 'do that stuff' indoors.
I asked if the man was hurting him. Of course, he said he wasn't. I then asked what he would do if someone complained about HIS daily jogs around the neighborhood.
If what someone does doesn't hurt you, let them be who they are. I just don't get narrow-mindedness.