After 5 years in, it's a good time to jump ship and move on to something else. It's still not clear to me why this requires quitting job, learning something new, moving in with parents, etc. If you want another job in another industry, start applying for new jobs and see what comes up.
I'm having trouble at work. I work my ass off, I'm a rock star at solving problems and making things work, I bring in tons of new money in projects due to the things I've created, and my boss' boss hates me... and my boss is his ass-kissing dog. So I'm on the hunt for new work.
One of the places that offered does something completely different that anything I've ever done. They consider themselves a company that takes only the best of the best, they're massively popular and successful, and they've got a line of undergrads out the door wanting an interview. Once you get there, they work you to death, treat you like crap, but they feed you and give you free t-shirts and stuff like that. They told me that they want me during the interview, but then they offered that I take a 20% pay cut (with a 20% signing bonus). I declined. But my point is that random, not-my-job offers do happen.
My other option is to take my same pay (which is pretty high), but in a much less expensive, pretty undesirable location. They made it very clear during the interview that they wanted me as well, and it's in a related but pretty different field. I declined that as well; not enough upside.
I have two more places that say they'll offer, but it's not on paper yet. We'll see about those...
I'm mid-career, EE, PhD, high salary, already living in a pretty desirable location. I think it's harder to find places where they want experience, and I'm having trouble finding places that can offer enough upside for me to walk away from my awesome job (working for complete assclowns).
Five years in is a good time to be looking. I think people in this thread have made it clear that EE was a good choice. I think that you should simply look for something else and see what happens.