toi- I still believe most don’t smoke.
Bar Shattya- do you think someone wants to marry your mishmar dude who doesn’t take showers ever and stinks even if he will bring up fine children? Some people can’t take being near the smell. Another reason why some won’t want someone to smoke is because it is a certain personality of people who smoke. Also it is against halacha according to many poskim. Do you thinks they want someone who shaves with a razor?