50% of relationships fail, so there's a real chance you won't even know this guy in 5 years time.
Relationships fail without the added shite that's happening here.
Let's call a spade a spade. Your Partner is telling you to kill your baby. He won't listen to your feelings. He says he won't come with you. So, he knows you will most likely never conceive again, however, he still wants you to travel hundreds of miles away, all alone, and allow someone to kill your baby, then let you give birth to this dead baby alone, and then come home as if nothing happened. I can't begin to tell you what sort of person would do this to someone they are meant to love. He seriously has someone wrong with him.
If you went ahead with the abortion "to do right by him", then quite frankly, I think he's mentally abused you for so long, you really can't see the wood for the trees.
Are you ever going to look at him and feel truly in love, knowing what he made you do? You will end up HATING him, down to his very bones, and you will leave him. So even if you do abort, your relationship has no way of lasting.
On the other hand, you could have this baby, and he could fall in love with it, and in time you could possibly get over this blip. Although, personally I could never forgive such cuntish behaviour, but people have gotten through worse.
So in that sense, I think the only shot at happiness for you, is to have this baby.
Here's another way of looking at it : I was with my ExH for 20 years. We now have no contact whatsoever.
I have 2 adult children. They are in my life on a daily basis, even if it's just to text. They are 2 of my closest friends and I love them more than anyone else on the planet.
Your priorities here are totally skewed. Your unborn baby will be the light of your life. Your Partner will seem insignificant by comparison, once you meet your baby.
Oh, and regards the age thing, 26 is perfect. I was 27 & 28 when I had mine, maybe that's why we are so close.
I just spoke mt my 19 y/o daughter (who is on holiday from Uni) about this thread and asked her what she would do, and she said she'd tell him to fuck off and she'd come home to me so that she had some support.
Tell your parents what's going on. Take time away from your Partner, allowing yourself to focus. Have the baby. It will be wonderful. If he comes round, so be it. If he doesn't, well, you will be fine.
I have a horrible vision of you, all alone in 40 years time, Mr Cunt left you ages ago, you never manged to conceive again, and you can't believe that you killed your baby for someone you wouldn't even recognise on the street.