So, I have a Ph.D. and I always ask myself why I got it, because now I just build websites.
Basically, what I feel like I got most out of it, was that it was a good life, that I ended up really enjoying. I did theory and I felt like my professors let us kind-of do whatever we want. We got paid enough money to live and I had a lot of time to enjoy my hobbies. I learned to play tennis and surf (I went to school in LA). But I would figure things out and work when I was inspired.
That is pretty much how I live now and it is still great!