Am I making the right decision not living at uni?

I'm going to university this September to study Psychology, my university is about 40 minutes drive away max. The thing is I really don't want to live at uni, I was diagnosed with a chronic illness 10 months ago and since then i've just got worse. (the disease is extremely rare it's where your body does not produce enough energy for your cells to function). Anyway my life is very hard and I struggle to do most things on my own and I get ill alot so I don't want to live with new people and I especially don't want to be on my own in my room, I suffer with depression as a symptom of my illness and I find when i'm alone it's at it's worst. My dad really wants me to live at uni, he says im going to miss out on the best time of my life. But I disagree, I'm not going to be going out and having fun with the people from uni because number 1. partying/drinking makes me extremely sick because of my condition now, number 2. I wouldn't be able to walk to the places they go and I don't have/want a wheelchair and number 3. I feel like if I live at uni I'm going to see everyone my age (18) enjoying themselves and doing all the things I can't, which will just make my life harder. I've lost most of my friends since I was diagnosed because they don't understand how ill I am and make fun of me, I feel like a burden to them. Another reason I don't want to live there is; my long term boyfriend, hes the only thing thats keeping me going at the minute and I'm so happy with him.
Suggestions?