<human>: Could you distill the essence of the text into 1-3 sentences?

BACKGROUND: My dad is borderline autistic, has communication issues and is emotionally fragile following a meltdown 2.5 years ago during which I ended all contact.

I always harbored resentment for my dad, since I was very little, coming to a realisation that I didn't like him personally when I was about 11. I told him so at the time and he cried for hours. When I was 15 I blocked him out of my life completely following his emotional breakdown and divorce of my mother, we now live in different cities, albeit relatively close. In the beginning I had so much hate for him that I could barely think about him. 

Fast forward to the present, he still attempts to keep in contact with me through text and email, but hasn't got a response in 2 years at least. He has little or no social skills, randomly requesting we meet up for a flight to another state, or a camping trip for a whole weekend. However, I have left home now and without the constant reminders from my mother of how shitty he is my feelings have mellowed. 

Basically I have the opportunity to have a decent relationship with him, but it may be toxic considering he is a man-child. What is it like being older and in the position of not having a dad and is it worth it to re-establish a relationship now? It is also probably relevant that I still feel like I love him, and it makes me incredibly sad thinking about the situation to be honest.
<bot>: How important is having a dad in your life as you progress through life slash will I regret not having a relationship with him in the future?