Hobbies: What and why?

So, when I closed my guitar shop, it soon dawned on me that I needed a new hobby. I wanted something that wasn't too strenuous or brain numbing that would excite me and also serve a purpose. Realizing that my wife and I spent around £50 a week on booze/wine, I plumped for home brewing.

After doing a bit of research, I went and bought a load of kit (used but in good nick) finishing off with new equipment I couldn't scrimp on. The thing with brewing is everything must be clinically clean and sanitised.