I wouldn't go back to a mechanical watch. The smartwatch has far too much use and far too many features for me to go to a watch that only tells time. Since using the Apple watch, I realized that having a mini iPhone on your wrist is actually great. It's not tech overload, I'd be looking up the same stuff on my phone, this just makes it easier and faster.
I would buy a mechanical watch if I had someone to leave it to, like a son or a nephew, someone that could inherit it a few decades down the road. This is what I see as the only true value of a mechanical watch for me, knowing that it's a device that can last decades as opposed to an Apple watch so it can become a keepsake for someone. Other than that, I wouldn't consider one. They are too limited and I am not interested in buying a piece of jewelry for men.