I hate houses that don't have an obvious main entrance.
I use to deliver pizza's and I hated walking through the grass (because there was no side walk or stepping stones) to the door that appeared to be the correct door just to have someone yell at me from around the side of the house because, "They don't use that door."
Then why have that door?
I find myself looking at peoples houses and guessing which door would be the one I'd deliver a pizza to. Quite often there are two doors that look equally as usable, and that is just annoying.