For anyone who reads this thread (the serious parts) in the future.....
Thought I should update you with how things turned out with this decision....
The first 6 months after my decision were quite honestly very difficult. As much as I felt I was making the right decision, it was hard to accept the loss of something I had worked so hard at for so many years (about 7 in my case). I had to leave SDN for a while as just being in touch with everyone left me a little bitter (imagine cranky curmudgeon more bitter than usual
😱)... But in time, as with anything, acceptance came and life went on.
Things got much better once I was able to move on with my life. I am now working at something I really, really enjoy, and even though I probably couldn't make any less money than I am now (really you couldn't), I am happy. There is no bitterness left about how things played out, and based on the conversations I have with those who I would have graduated with, I don't see how I would have been better off in any way by pushing through. I just enjoy every day so much now, and I haven't been able to say that for a long, long time.
Sure, I still want to learn more, and I check back at lecture notes from time to time when something comes up with my own pets, but I think things worked out for the best for me.
For anyone else out there who is contemplating moving on for whatever reason, I encourage you to do what you think is best for you. Life will go on, you will get over the sadness of being unable to complete one dream, and you will hopefully find a new one to work on.
All the best to everyone in the coming year.

SOV