I think some of this stuff was really good. Whats the point if you keep doing the bread and butter thing that everyone is doing?! Your peculiarity will set you apart.
If you add some nice vocal melody and lyrics to some of the arrangements I heard above, they can be really good productions.
Quitting is easy. But it depends on how you look at it. Sometimes what you probably need is a break and a fresh school of thought. And then start again.
I hope you consider this as a break and start producing again soon. :)
Also, I would love for you to listen to two if my band's songs with wacky stuff in it. You may not understand the language but I am sure you'll get the production. :D

Cheers!