Socionically unfavourable relationships seem very common, ime and observations. By 'unfavorable' i mean anything outside of quadra. Maybe my sample is too small, but seems to go against this idea that favourable types will generally easily attract each other. What have you noticed or experienced? Any concrete examples you can share?

I'm aware there are many other factors involved of course, but still seems to be a bit glaring. Any thoughts or comments to share?

I'm generally referring to close psychological relationships so dating, marriage, very close friendships etc.