Babies Last Name

I’m not giving my partner our babies last name. He is really upset (i think more embarrassed than anything) and doesn’t think its normal for a child to have their mothers last name.
Did you give your babies your last name ? Why or why not?
I chose not to because my partner was absent, drank a lot, was not helpful, didn’t buy gifts on holidays, would play video games until 6am then spend the day in bed, prioritize friends over family anything