When my girlfriend and I got together neither of us had decided if we wanted children in the future. After being together for around two years we talked about it and realised we didn't want children and enjoyed our life as we have it now. We both enjoy going on nice holidays and exploring new cities, trying new bars and restaurants etc and all of that would be heavily limited if we had children.

We both value our downtime after work and need to relax and make sure we have enough time for hobbies and holidays etc which again would be limited with children. After that conversation, we never really spoke in depth about children but whenever the topic came up we both agreed we didn't want them.

We have been talking about buying a house in the next 5 years. At that point we'll be married as we both agree that we'll be getting married likely within the next three years. At the weekend my girlfriend mentioned wanting a house by the time she's 30 so we have somewhere to raise a child. I asked what she meant as we'd agreed we don't want children.

She said she might change her mind in the future so just wants to be sure. I mentioned that I won't be changing my mind so if she thinks she's likely to want children then we're not compatible.

She said she's not certain yet so we can just look at it in a few years but I told her no since it's not really fair on wither of us to stay together a few more years for my girlfriend to then change her mind and we'd have to break up anyway.

She repeated that she wasn't certain and that it was just a thought for the future that she might possibly want them and said there's no reasonfor us to break up over it.

She said I should just be more open to see what happens in the future but I just told her again that I know I don't want children and that isn't going to change. She said I was being inflexible and causing an argument over nothing since she might not want children in the future.

AITAH for not changing my stance on having kids?