I've been playing games all my life on many different platforms, but some of the best fun I've ever had has been on handhelds.
Even when I also have the PC or console version, some games just feel more at home on a handheld, and more appealing when you don't have to commit to a whole session of playing them.
On one hand, handhelds take less focus than sitting in one place staring in one direction, so you can play on them in bite-sized breaks, putting them away at any time and instantly resuming where you left off.
But on the other hand, something so close to your face, that you can snuggle with in any position anywhere, also has a level of intimacy not found in bigger screens and bulkier controls.
Nothing can compare to dozing off in bed while engrossed in a game with a captivating story, mechanics, and music..
Laptops are too bulky, and phones or tablets don't have built-in physical controls.
Which is why I'm a bit concerned about there being only one handheld left. The Vita was amazing and I still love it but Sony did everything they could to kill it off, and the Switch's success hasn't inspired them to try again.
If anyone feels like making a new handheld that anyone can develop for, my money is yours. :)