I love Hinny. BUT... I don't think they would have a happily ever after. I think they would have a happy-for-now and then they would kind of get bored of each other. I don't know I'm just having some thoughts. For me, Harry is definitely bisexual, but I think he leans more towards men than women. At least the Harry in my head who became a teacher, the auror Harry is definitely married to Ginny and had 80 children. But I don't care about JKR and she doesn't know him better than I do.
Harry played Quidditch for several years and then became a Defense Against the Dark Arts teacher. Maybe he ended up with a man, maybe he ended up with a woman who knows. But I don't think Hinny would be endgame. I don't know... honestly I always thought he would work better with Ron.
edit: do not leave a comment if you disagree or if you want to fight I will simply delete your comment 🙏🏻