If I give up a few things I like about my existing keyboard to get what you like about your keyboard, that's a bad deal. I think that's true for most people.
The type of mechanical keys on my keyboards really reduce the amount of strain on my wrist relative to membrane keyboards. It's not just a matter of taste. There's much less of a bump on the bottom if the key can continue moving after the keystroke is triggered. Membrane keyboards can do a little bit of that, but not nearly as well.
Trackpoint, implemented well, means I can do casual mousing (e.g. switching focus) without moving my hands to the mouse. That reduces shoulder strain.
You're welcome to call things I like "a bad idea," and I could do the reverse just as well, but at the end of the day, I ain't buying. I know what works for me, and I haven't found an "ergo" keyboard which does.