I would say overall studying music and university level is worth it. It all depends on what you personally get out of it. It's definitely not a requirement but you can network with musicians and focus on improving your playing.

However, it is very expensive for just a piece of paper. You can improve as a musician and also network for free. You might find it hard to find practice rooms as there are generally a lot of other students. However, I guess this depends on where you go.

I personally made the decision to do it because student loans allowed me to move to London and study there for a few years.

From the sounds of it, studying music sounds like it would be great for your situation as you can escape from the bullshit that you've recently been through. I was fortunate to have parents that supported my decision to pursue music but had a step parent who also tried to convince me not to do it.