There's no reason to go back now that their unified platform is more successful than their dedicated home consoles ever were. Much of their userbase values portability so they'd be cutting out a big chunk of their audience.
I'm not a big fan of portables either; I play my Switch entirely in docked mode so to me it's essentially a home console that I can easily move from place to place. And that's the beauty of it; its flexible form factor allows you to play how you want.