It's not that common to follow in your father's footsteps. Out of my friends literally none is in the same trade as their fathers. They did not finish the same schools, they are interested in different subjects and work in different areas. Like I have 3 friends whose fathers used to be construction workers. 1 was a designer, one was an architect and one was a builder and their sons are in IT, and one works in the TSA.
When it comes to habits, I know a number of people whose parents smoked and they don't smoke.
Whether you do what your parents did is a random thing that depends on your character, life choices, the bond with your parents and many more.
I don't think that a father who gamble would want their kids to be a gamblor when they grow up. A addicted drinker also would not want their kids to be an alcohol addict - These are not inherited traits. My father was a chain smoker and my brother hated it - and he dont smoke at all. My father was a gambler and my sibling don't like gambling because of the fights they have seen among our parents.