The more I read your posts, the more I think you are in danger of ending up in a very unhappy or abusive relationship in future.
You say you like fixing people (or something to that effect). If you like helping people, train to be a therapist, be a carer, volunteer to work at an animal shelter or channel these instincts towards children.
That's what a lot of this is - they are misplaced nurturing instincts, or an attempt to understand and resolve a past trauma or difficult situation. Some people are drawn towards fixing people because they think that if they can fix that person, they can 'fix' and then make peace with something or someone in their past.
Despite difficult upbringing, adult men are not babies (even though someone of them are capable of having tantrums like toddlers). You shouldn't be trying to fix them or nurture them. You need to respect them for what they are - adult males, and adult males are dangerous in a way that babies are not.
It's our faulty as a society for continuing to peddle the myth of beauty & the beast - a curious young woman who finds and transforms or tames a usually lonesome, haunted (usually older man or monster). We love a good story about a man who seems hard and unforgiving on the outside, who ends up being a softy and transformed by his relationship at the end.
I'm sure there are stories where that's worked, but you know where a lot of those women end up in real life?
They end up here, on these forums, in their 30s, 40s or 50s, worn and tired. Devastated that after years of trying and striving, their man having discarded them for a younger women or maybe even turned physically abusive. They turn up here to lament the fact their partner is still taking cocaine, still gambling. They wonder where all their youth went, cry over years wasted.
Be very careful of being caught up in the fantasy of 'fixing' or 'saving' someone. Don't get caught up in the romance of the tortured soul that had a difficult childhood. It is you who will most likely pay dearly for that.