Making money is the only reason to make ANY game...

Lol, they already are!

however, it is kind of a catch 22.  Third parties cant make money on the wii u because they havent built up an audience on the wii u by releasing their games.  The games they have released have been half hearted ports at best for the most part.

If they supported the wii u more, they would sell more on the wii u... Maybe.  This gen may be a lost cause though...

1. Push their creativity with asymmetric gaming. This goes for Nintendo too.

2. Cause i am sick of all the virtual penis fights between xbox one and ps4, would rather avoid being associated with those type of crowds, meanig I dont need to buy all the consoles.

More Money
Increase the fanbase

Isn't that why people make multiplatform games in general?

1: If the wii u does turn around, the game can have great future sales and help build the fanbase.

2: The game uses the gamepad to the fullest and just isn't the same without it.

gain respect of wii U owners.
Maybe, in a sucessful wii U sucessor, the fan base can remember how greedy some developers were for not suporting wii U, and maybe would skip his games.

(ok, is difficult to find a good reason, maybe if I was a developer, I only would make games to wii U if it was very easy to port)

does it really make more money? since third party games have been failing on the Wiiu, can we really say they are profitable? even if they are slightly more profitable or break ever, wouldnt the resources be better fit to work on something else, that would be much much more profitable, so really putting games on the Wiiu doesnt make more money, but actually makes a lot less.

I think that's the reason the WiiU has no 3rd party support.

If you're eliminating money from the set of valid reasons, then I bet you can't post two good reasons why third parties should make PS4 or Xbox One games.

I don't need two good reasons, I need just one: business. Even if a single product is unprofitable (and few will be, when you're talking multiplatform titles where the only added costs are porting costs), having your products on the system will increase awareness amongst the owners of said system, and increases the chance of a breakout hit (like Just Dance, for instance). It also allows you to further improve your skill at developing code for the system, which means that, should the system start selling a lot better, you're well placed to leverage the suddenly-flourishing market.

1) Hardware limitations breed creativity.

2) Untapped market potential.