<human>: I've never been very maternal. I like kids... But they wear me out. Some people really like talking to kids and think they are the bees knees. I think they are cute sometimes, but I often find myself wanting to get away from them. 

When I think of motherhood, I think of losing myself, of sacrificing most of my freedom for the next 18+ years and possibly my relationship. I like what my fiancé and I have now - we can go and do whatever we like, whenever, no stress at all. We can sleep in on the weekends. He's my best friend, and I like our little life. I need time to myself, I like quiet, I want to pursue my hobbies. I can imagine some parts of motherhood I would like - sharing the world, teaching him or her... But the rest of it - pregnancy, stress, lack of sleep, nursing, constantly on the run, the expense, possibility of disabilities - just fills me with dread. I don't think my fiancé realizes how difficult parenthood is. He has this idealized version of it, but he gets really annoyed when kids on the playground are screaming (and with noise in general) and he gets grumpy when he doesn't get enough sleep. He works a lot - at night and on the weekends - so I know most of the work would fall to me, and I think I might come to resent it, even if I would love my kids to pieces.

But I also know I could change my mind. I don't think I will, but it's happened before... I'm afraid to voice this opinion. I've talked about my concerns before and he has said "we aren't the first parents in the world - if they can do it, so can we," and I have agreed somewhat... But I've never full out said I don't want kids because I am not 100% sure either way, and he has a super low opinion of a friend of ours who doesn't want kids.

What do I do? I don't want to lose him, but I don't know how to talk about this issue... And what if I change my mind?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: fiancé wants kids. I'm unsure. It fills me with dread, but some parts I might like. Telling him might mean I will lose him, but what if I change my mind?