A couple of years back I started dabbling in the social sciences and humanities (my background is in ecology / evolutionary biology), and became interested in one discipline after another. From psychology to history of science to anthropology and sociology, to economics and politics, to philosophy and religious studies and cultural studies, etc.
I find it intrinsically motivating to move from ignorance slowly towards understanding. I love reading textbooks to learn basic concepts and looking through academic titles just to swim in their ideas.
While I loved university, I won't be able to handle the demands of formal schooling (especially not while raising a family). I also wouldn't want to do any advanced research degrees as I have no patience in studying a small set of problems (I tried it for science and it was horrendous).
While I have no issue just continuing to explore these subjects privately, I feel like something is missing. I feel like I want to do something more tangible with this breadth of interests, but I'm coming up empty in terms of ideas. I like writing and can imagine having some sort of blog, but that's seems so cliche?
Any suggestions? Perhaps examples of something others have done with their broad interests?
What does one do with an intellectual life other than swimming through intellectual content?
The other thing I would suggest, if your career and family would manage, is spending time working in the UK. It's very easy to get a visa if you're involved in the tech industry and their higher education system for MA/MS degrees and PhDs is very different than the US, both more affordable and better suited towards working life. In the US, the thought is that if you're doing a PhD, say, it's a full-time professionalized pursuit under the assumption you will be a professor; in the rest of the world, a PhD is essentially an apprenticeship in writing under a mentor for however long it takes you, often with no aim (i.e. career) other than that writing itself.
Personally, I've alternated between highly-paid years working in the tech industry and years studying or writing without employment to great personal satisfaction (and managed to help publish a few scholarly anthologies that wouldn't have happened without someone who didn't need to rely on academic grants etc).