DJing is still massive guys. Have you guys heard of EDM or what? Yeah they might not use turntables but still. Did you know the CEO of Goldman Sachs is a real DJ! He even released a track. Google his story, it's fascinating.
When I left the very real hustle and bustle of the DJ business over ten years ago to concentrate on karaoke, I found my mental fatigue all but disappeared. As a karaoke host, I get to see many of the same faces every week, and as a result, I've been able to remember pretty-much all of our "regulars" names and the new faces after a couple of appearances. They've become almost like family.
I've hired a roadie who is only too happy to do the heavy lifting, thus limiting the toll on this 73-year-old body. Twice each week I get to visit and kibitz with friends, sing a song or two, meet and make new friends... and get paid to do it. True, karaoke doesn't pay much more than half what I would make doing wedding receptions, but then, I only have to do a tenth of the work.
Another advantage... a karaoke host needs to keep up a decent library, but nowhere near that required of the mobile DJ. The transition from mobile DJ to karaoke host was one of the best decisions I could have made.
I'll probably retire someday... perhaps in another 7 years (at 80)... or when, as has often been said "when they pry that microphone from my cold, dead hands".