Quote - I see people fighting about render engines and programs. Personally i dont even care about  Rendering. So i don't even use rendering.

Maybe good for backgrounds but i dont really care. I use the lowest settings, so that i can render in 1 minute.

Preview mode is the way to go. I mean who cares. I dont care about rendering.

These days Preview mode is better than ever. It's near render quality so why waste time rendering.

You can add shadows by hand painting them later.

If you have enough talent to hand paint the shadows properly, why are you even bothering with 3D?  Why don't you just hand paint the entire scene from scratch?

When you say later, how much later?  How many 1 minute renders have you actually finished?  Not just the hand painted shadows but all the other little details.