How secure is your job, employer and industry? How transferable are your skills?
I'm 5 years your junior (in a different industry, on a different continent), and I made a considered jump out of tech a few years ago. I regret doing so.
I found myself in a specialised technical niche of a declining industry. I made a push to get into a project management role, where, if nothing else, I could get a few more generalist skills to write on a resume. Now I'm in a dull administrative role which I don't enjoy at all.
I've come to acknowledge that I get job satisfaction from solving problems. Now if I do my job properly, I don't see problems... and if I do, they're long-term problems that can't just be sat down and worked through. To run projects in a resource-constrained organisation, I need to be shameless in pushing people to do my work ahead of the other work they've been given... and that doesn't come easy to me.
The reasons for making the shift are still there - I could still be the tech guy with no transferable skills. Now I have some of the skills I would need to bluff my way into a comparable job elsewhere... but no interest in doing a comparable job elsewhere.
I don't have a good answer. Just don't burn any bridges unless you're pretty sure you're doing the right thing.