Very often, people like to fit into moulds based on the expectations of others.
For instance, a new parent might give up a profitable or healthy hobby for the sake of parenting on the assumptions that being a parent requires him or her to fit into society’s frame of who a parent should be.
Alternatively, newlyweds might quit certain individual pursuits—like getting an advanced degree—for the sake of their marriage, cognizant of the new expectations society puts on them like borrowing to buy a house.
The danger of being inauthentic because of other people’s expectations is you will lose your self-respect and the respect of others, eventually. Stay yourself.