Reading all the comments, it seems the price seems to be the biggest kicker for everyone who doubts the Switch. So here is a snapshot of its value compared to 2 years ago:
Just over two years ago I bought a WiiU premium bundle with MK8 for £239.95. That came with 32GB onboard, an extra charging dock, amazing game and a quirky gamepad screen.
In March the option will be £279.99 + ~£48 for Zelda (£327.99). That comes with 32GB onboard, a charging dock, amazing game and a quirky gamepad screen.
So what does that extra £88 get me this time?
+ Slightly more powerful machine (Zelda at 900p rather than 720p...)
+ Cartridge based games
+ Fully portable gaming
+ 2nd controller... kind of.
+ Slightly more online infrastructure
- No dual screen gaming (WiiU touchscreen)
- No backwards compatability
I'd say thats actually a good deal for £88 more. Its about the same cost as the step up from a GTX 1050 GPU to a 1060 - just to give some perspective in from a similar market. I think come xmas they will bundle Mario with it for £305.99 and it will sell like hot cakes.
(This isn't a comparison on what to buy now just to be clear - of course you should buy a switch if you didn't get a WiiU.)