To be honest, I wasn't trying to make it a moral issue by writing that sentence. In my view, people are free to go about doing self-harming activities if they want. I just don't enjoy when they do things that also affect others, like smoking in public around others just going about their day. Where I live regularly people just walk around on public sidewalks smoking making everyone they walk past or in front of breath it in. Or for example smoking at bus stops is another common problem. This is equivalent to actively harming others in my opinion.
And as some others have mentioned it may be that there is much more harm done to things like the environment by powers much greater than just those who smoke. So while there are some arguing for that point of view, I do understand those who argue against this one due to there "being much bigger fish to fry"
I think there are perfectly valid reasons to not like cigarette smoke, I just think that constantly harping over the "health" aspect rather than the "resolving the conflict of the smoke itself" aspect is not helpful.
And as some others have mentioned it may be that there is much more harm done to things like the environment by powers much greater than just those who smoke. So while there are some arguing for that point of view, I do understand those who argue against this one due to there "being much bigger fish to fry"