Well, you apparently love Nintendo for a reason, so you made the right choice! No question about it. Nintendo will give you the games you love, it'll just take a little while - and if we're all damn lucky, Wii U might even get decent 3rd party support. But that remains to be seen (so no need to bitch about that it won't; we don't know yet).
Let me ask you this; if you would have gotten the PS3, would you still have gotten a Wii U later down the road? If the answer is yes, then I suggest you simply buy a PC in a year or two. It gets almost all of the multiplat, and even gets games consoles can't play! So PC has exclusives of its own, in a way, and with Steam Sales you can find games for dirt cheap, AND PC games are cheaper to begin with - another win. AND you can play PC games with console controlers. AND PC has some amazing backwards compatibility!! I can play games from the 90's on it :p
PS3 has quite a few exclusives that might be tempting, but if you don't care about those PC is far superior. AND it's free to go online unlike xbox.
So if you can afford two options, Wii U+PC is a winning combination! PS3 just wouldn't be right for you if you love Nintendo so much, and you can get mature games on PC as well.
And you can watch porn on both Wii U and PC. Nuff said