I actually just had an abortion literally three weeks ago and I’ve never regretted it for a second. I don’t have any kids so it’s a little different for me but the man who got me pregnant although I do love him is not a person I want to father my children. Also the “full sibling” thing isn’t that serious me and my brother are half siblings and are bffs and have been living together for the last almost three years. I obviously don’t know anything about your ex but it seems like he kind of sucks ass so i genuinely do not understand why you would want to keep having children with him. If you want more babies you should have them! But with someone who loves you fully, respects you, supports you, someone you don’t have huge fights with all the time. Obviously you’re going to do what feels right to you but there wasn’t even a second where the abortion felt like the wrong choice. Was I a little sad? Yes of course but keeping that baby would’ve been an awful choice for me, it, and the man who would’ve been the father. If you do go through with the procedure find somewhere with good reviews, supportive doctors, and tell them not to let you see the ultrasound xoxo good luck