Do most women who choose not to marry or have children end up regretting it later?

it depend on why you dont want to have kids or be married. there are women who are not married and dont have kids and are happy whereas there are those who have the marriage and kids and miserable and vice versa. look at Oprah,she's not married and doesnt have kids and i think she's happy and a lot of women around the world look up to her.