I quit tobacco years ago and the last studies I read pointed to smoke and tar, not nicotine, as the specific cause of cancer.
But later when vaporizers got popular they changed the tune to "tobacco is bad, no matter how you consume it". Honestly, I don't know which is true.
Nobody chain smokes joints all day unless they're Snoop Dogg or something.
There are many somethings out there. But vapes are indeed more convenient.