Should i move?

In the end of course only I can decide what to do but I am posting this topic anyways to see what advice others have.

First I will give some input into my current life situation.

I am a 30 year old man who is currently doing very little with life for the last couple years. Ever since my girlfriend kicked me out two and a half years ago, I have been living in my moms basement, with not enough money to move out. I've had many jobs and tried college a couple times but due to various health problems I have resorted to disability income. My attempts at school and work usually resulted in me losing more money than I made and took so much of my time that I couldn't take care of myself or do things I really wanted to do only to result me in being dismissed from work and school.
I have many goals I wish to achieve. I am a musician and was at one point years ago somewhat famous in my local area, played on all the big radio stations and doing shows weekly. These days people I work with do not seem to care much for the rock star life and have their own families, careers, or did the opposite and turned to drug addiction, homelessness and jail.
I want to get back in the music scene but those days have died in a way and I'm not sure what to do to bring them back.
I would also like to be a cartoonist and make animations. I love story telling and am filled with dreams of adventures.

Now I am at a place in life where I need to decide what to do next.

I currently live in Washington. If I stay here I plan to eventually move back into the music studio where I once lived and produce records for the bands that go there. Meanwhile working on my own stuff and trying to get back into the music scene. Of course everyone here does not want me to move and encourages me to stay, but I'm not getting much accomplished either. Part of it is my fault but part of it is I don't know what to do either.

My other option is to move to Florida. There I would live with my 90 year old grandmother and take care of her while I work on my music and basically do what I would do here.
The problem is I do not know many people there other than a few family members and I worked so hard at getting to know people here. Social charisma is not one of my best qualities so I have no idea how long it would take me to develop a new social network. People have also stated that abandoning my problems here wont make them go away.
Moving would also be expensive, so while I could always come back, if I did return I would be set back further in life than I already am.

What would you do in my situation?

-Bugs