It's very uneven in its first couple of seasons. The main actor is rubbish and has one facial expression. It has lots of unnecessary gratuitous shagging and nudity set to music. There's a lot about it that's awful. What makes it very good later is the other characters like Tommy and some of the small time hoodlums and peripheral characters. The latest season is very good with lots of great black comedy.
It sort of reminds me of Vikings, in that initially its inconsistent and plain weird but something kept me watching and ultimately it was very rewarding.
The bolded part is so true. I never really thought about it but when he smiled for the first time after about 25 episodes it actually felt a bit weird to see it.
I still love the show though.