Dude I’m 38 and I’m surprised everybody doesn’t at any age.
I shave my head. I’ll admit I had to unlearn some habits from cartridge shaving. First couple of times my head was a bloody (literally) mess. But once I got technique down, it’s easier and faster than cartridge shaving.
What slows me down over “the modern way” is that I whip my soap with a brush and bowl. That’s a little less convenient than shaving cream/gel, but it’s optional. No reason you can’t use canned foam/gel. Holy shit is it cheaper though. I ordered a 3 pack of cheap shaving soap (3.5oz bars, $10 total) last January and I’m not even halfway into the second bar.
Best part is, less waste. No plastic. Every handle I’ve seen is all metal and even the cheap ones feel better in the hand. Stainless Steel Blades are wrapped in wax paper and packed in a little cardboard box. Soap gets shipped in cardboard boxes.