Fiancé had a talk with me… he probably wants biological kids

So my fiancé told me that he probably wants kids even though he knows my stance. This hurts a lot because this would be yet another failed engagement I’ve had. Does it also feel like to anyone else that the people who do this love something that doesn’t even exist more than their partners? I’m open to adoption and have been for a while but he says that’s not enough… I’ve always had the mindset of why purposely put more kids out into the world when there’s kids desperately wanting to have families? Parenting is parenting whether kids are biological or not. Which is also why I debated posting this on this sub because technically I’m not childfree but I know that this sub would understand where I’m coming from.

Fiancé had a talk with me… he probably wants biological kids