There are no physical reasons to start smoking. The body doesn't need tobacco the way it needs food, water, sleep... People start smoking for a variety of different reasons. Some think it looks cool. Others start because their family members or friends smoke.
Bad skin.
Bad breath.
Bad-smelling body and clothes.
Increased risk of illness...
Do you want all that? I don't.
Let's give up smoking... after a day, after a week, after a month, a year... after a life...