That's a bit harsh. [Blunt, but true. Kurt wouldn't damn anyone to Hell for smoking; it's a choice and honestly, there are far worse things that people could be doing besides poisoning their lungs. Doesn't mean he has to approve, though.] What makes you say that?

[His eyes watch the stick of tobacco, following the way it moves through J's fingers and is brought up to her lips. Brilliantly colored irises dilate at the cigarette being lit by tiny flares from her mouth. He'd assumed that she had some sort of powers, considering she lived with them in the mansion, but he hadn't seen any abilities in action.]

It's not necessarily evil. The virtue of temperance disposes us to avoid any kind of excess with our vices, whether food, alcohol, tobacco, or medicine. Even materialistic things.