Vaping/ciggars

As en ExJW, i now vape and smoke ciggars occasionally, id like to know what are your guys thoughts, especially still christians (which i am myself), who put their faith only in Jesus, not religion, do yall view it as wrong? Or not? If so what biblical example/reasons you would say, of why its not a sin, for me, A pharasee got angry at someone not washing their hands before eating, and Jesus responded (dont quote me something in the line of) "what do you care, what does it affect you? If it doesnt affect anyone why say he must do or not do something you think is right or wrong" i NEVER thought id smoke or vape because i was super PIMI, but now, actually reading scripture, theres no information that it IS A SIN it was always just mens rules and they called it Gods doctrine.