I'm not angry. Sure, I'm not jumping for joy just because I'm not a big fan of mobile games, but I know that this is a financially sound move for Nintendo. They just can't go overboard.

I will point out that as of January 2014, Iwata said that Nintendo would explore developing on smartphones; he only ever ruled out stuff like smart-device only, or dumping existing/past Nintendo titles onto smart-devices for a quick buck. Last April alongside the news about QoL and the new direction for future hardware, Iwata confirmed Nintendo staff had been given the express goal of experimenting on smart devices. Iwata's caution came less from not wanting to use smart-devices, and more from not wanting to devalue Nintendo's intellectual property. He correctly argued at GDC 2011 that content is king, that videogames have value and that value needs protecting from a race-to-the-bottom. A race to the bottom is exactly what has ensued in the smart-device software market.

Now I'm mainly replying to you because I really agree with the latter part of your post, and I'm hoping (going by past statements like I've outlined above) Nintendo will begin a process of rectifying this, as you say in the bolded part of your post. Too many consumers--particularly in the West where app spending is far below levels per user than Japan, for example--don't see value in videogames; videogames have become disposable and this threatens the console industry in the long-run. Rather than ignoring the smart-device market, as Nintendo initially seemed to want to, the better thing to do is to engage with it and engage with the hundreds of millions of consumers who regularly game on smart devices but not on console. If Nintendo can start to bring some of them into the industry, while creating a higher quality standard of mobile title, the games industry could be in a much better place.

There's some strength in comparing this to Nintendo's entry into the home console market way back in the 80's. Atari and other companies choked the market with masses of low-quality software; Nintendo responded with a select number of quality titles and the market responded. 

Putting their games on mobile devices is a very smart move for Nintendo. Their potential user base just increased significantly.

It is bad for one reason mobile gaming is a fad that will fade. I thought Nintendo was smarter than this. Going mobile to make profit is like McDonalds selling their fries at Burger King yes you are making money but eventually you sellout. Mobile games are mindless and do not challenge you, the control
Specs are awful, I do not see how Super Mario Bros can be played fluently on mobile devices.

Well, some people will be sad, namely Sony and MS fans. As I said for a longer time, if Nintendo is going 3rd-party, they will do on mobile not on console of other companies.

Anyways, so far it doesn't seem bad. It looks like the deal means Dena-games can use Nintendo-property, not Nintendo-games on mobile. That wouldn't make too much sense anyway, at least not with usual controls.

And Dena will bring Tomodachi Universe, with in-app-purchases for clothing, songs and room-decorations and they will explode with money.

Yeah what he said

You can buy Starbucks coffee at grocery stores all over the place these days. It doesn't mean that the coffee shops are gone forever now.

Just like using my phone to tell the time or as a calander or a calculator or to check th weather etc etc.

I'm not mad, but just worried...

The reason why some Nintendo fans aren't happy about Nintendo going mobile is because of their quality of games.
If you had to split your workforce between the mobile AND the console/handhelds, that means less games for consoles and handhelds. If they try to push out games faster to meet the demand for the consoles, the quality will go down. Plus, if they make great mobile games, the handhelds will die really fast.

I don't have a WiiU.  :::sadness:::