Hehe I never thin out my paints, I hate when the painting floats everywhere and doesn't stick to the surface. I guess if I practiced perhaps I would get a better result but somehow it just feels wrong and that my result gets worse. Thinning inks? they are already like water, how does that help in getting a better result? I am sure they do get better, just don't see how.
I know that people seem to despise not thinning down when painting but perhaps I've developed a technique that doesn't support thin colors? I don't know.