I think your privilege — and lack of awareness thereof — is showing...
Re: your edit, it's not the choices that are privilege, but all too often, the opportunity even to make them. As a white male, I have choices, and opportunities to make them, that women and non-white people simply don't. That's privilege: not what you do with the choices you do have, but the choices you have available to you.
Again, you're misunderstanding the nature of privilege. Having the choice of whether or not to have children at — or after — 18 is a privilege. There are parts of the world (arguably, even parts of the US) where young women don't get that choice, whether through (lack of) education, (lack of) access to contraception, forced marriage, or otherwise, those women have had that choice taken from them.
To have the choice is the privilege, not whether or how it's exercised.
Re: your edit, it's not the choices that are privilege, but all too often, the opportunity even to make them. As a white male, I have choices, and opportunities to make them, that women and non-white people simply don't. That's privilege: not what you do with the choices you do have, but the choices you have available to you.