I felt some emotional attachment to everyone in Rogue One except for Baze. I actually thought killing Han was just bad writing. Hell, I think Kylo Ren is a terribly written character in general so when Han died, I was kinda just all like ah, well that just happened. Oh well. But I dunno, I wasn't a fan of Episode VII in general except for Poe.
Disney killed Han to give their mediocre villian some street cred. They should have killed off the much less popular Leia instead if they were so desperate to kill someone.