What for?
Most TVs these days come with those included, and on the go, it's certainly not really much better than just watching on your phone considering how big those have gotten in the meanwhile.
Seriously, there was an argument to be made 5 years ago, but now, I don't see that point anymore.
That said, I can see Icaros point above of having all their favorite apps and games on one single device, but that's about it.
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454 List as Google Doc: https://docs.google.com/spreadsheets/d/1aW2hXQT1TheElVS7z-F3pP-7nbqdrDqWNTxl6JoJWBY/edit?usp=sharing
The Steam/GOG key gifting thread: https://gamrconnect.vgchartz.com/thread/242024/the-steamgog-key-gifting-thread/1/
Free Pc Games thread: https://gamrconnect.vgchartz.com/thread/248138/free-pc-games/1/