Help needed ,dont know if I should have dumped him?

You did the right thing, breaking up with him. Although you love and miss him like crazy, if his anger got out of control you would be thinking back to now going why didn't I leave him? But if the longing for him really is unbearable then sign him up to an anger management class, even if he doesn't want to. If he starts to shout at you or physically hurt you, leave the room/place that he is in. His drinking obviously has ALOT to do with his stroke and his outbursts. Watch how he drinks, make sure he knows the limit. Make sure night-outs aren't EVERY night! If he hasn't changed after your efforts, leave him good and proper, he wouldn't deserve you.