Think of it this way: using Rush as an example, I may like Geddy Lee's bass playing better than I like Alex Lifeson's guitar playing, which I do, yet drummer Neil Peart is my favorite member because I think he's an excellent drummer, and because I prefer the drums over any other instrument.
Harrystyles!! Ever heard of the first amendment... Freedom of speech? So I guess I suppose I should LOVE Justin bieber when I clearly think he should go terrorize his own kind. No thank you. I'll adore classic rock music and all that is great.
Usually for me it's who I relate to the most or who I'm the most like that would be my favourite like I relate myself to niall the best in 1D and he's my fav but I love them all so much at the same time