Sorry @Moomin88 I didn't mean to ignore you, but I hope you can ignore people like Hwi, as he or she is the weird one. You wouldn't have that particular "bump" without your partner's involvement, and as it is growing in your womb, and he would be touching your skin, you are the one who should choose if you want anyone else to touch your beautiful bump - and not Hwi! But you already know that.
However, I do believe that our male partners often don't want to read the baby stages books, or talk to the baby etc before the baby is born. I suppose when it comes down to it, our female brains have been developing new ideas - particularly quickly for about the last 150 to 200 years, since we women have realised that actually we are just as intelligent, just as capable in many things, and also more capable than men in many other things, and that we are right to expect to be treated as equally as important human beings as men are - but I think that the evolution of any animals bodies take a lot longer to adapt and change to new, more appropriate, more usable functions physically, than our brains do, and maybe that lack of notably different physical attributes does still mean that some people, particularly some men I suspect, do actually take longer for their brains to adapt to the changes.
I think that deep down, maybe even subconsciously, many men still want to be the hunter gatherers, and fewer women, but still some, want to be solely the homemakers and child readers. May I just add, that if both members of a heterosexual couple want to follow the more traditional roles, then that is of course fine.
Two last things OP; if at all possible please don't make any important or final decisions until you are at the very least 3 months after giving birth, preferably quite a bit more, as not only will your hormones still be all over the place postpartum, but lack of sleep, lifestyle changes - both permanent and temporary changes - will all have a massive affect on your's, and probably/hopefully your partner's, abilities to think straight, never mind sensibly. I am wishing you loads of good luck, and hoping that (hopefully along with both joint and individual counselling) you are your partner can reach a loving and supportive relationship 🩷 xx