>>7321
Black and white is cheaper to print and quicker to produce, and lends its own sort of style to a work that colour can't really do. As the anon above this post said, there's a specific allure to black and white.

>>7335
Flat colours, like how old comic books were done, really don't look good. Not saying it can't -- Watchmen's colouring, (pic related, as an example) for instance, I would say is one of the comic's biggest strengths because of how it uses colours to create atmosphere, but most of the time it isn't done with this level of deliberateness and care.