Fair point, but the indecisiveness has more to do with who I'm with more than a personal final decision.
Put it this way: I don't care to have a kid. The worst thing that could happen is if I had a kid and my SO died or all of the sudden went fucking nuts, and now I'm saddled with a child. I would take full responsibility, I would love the child, but it would be a huge undertaking I would have wanted with someone, not by myself. And frankly speaking, seeing how my ex was talking about kids like you talk about getting a fucking cat, it better be with the right person.
In other words, I'm fluid to what a prospective partner wants. If she changes her mind after we've been together for a while, I'm open to that also.
But I want some time in a damn relationship before something like that is even determined, and it's not a default personal choice.
Why 25? Because people can change their minds, but it'd give some time in life to actually make sure what decision is made. There's less of a pressure on a biological clock for someone to rush into wanting one.
My ex is 34. When I first met her, the exact question was the same. She didn't want kids, didn't want a family, just wanted a steady relationship. That changed within months of dating.
I'm simply wanting to buffer the timeline in so that something can be discussed rather than rushed all of the sudden.