Controversial take: On a population level, the negatives of smoking are at least partially mitigated by the "smoking suppresses obesity" side effect. Obesity is such a huge (pun not intended) public health issue in modern American society that any intervention reducing it is actually quite valuable.

It's at least arguable and perhaps even true that we as a society would be better off if everybody used tobacco at 1950's rates and therefore got skinnier, especially if we all just dipped Zyns or similar smokeless "low harm" nicotine formats instead of smoking.

That said, I personally use 0 tobacco/nicotine etc.