it depends on condition of the current paint. sometimes it's good to paint everything at once and not have to worry about it again

Look closely at a few of the doors in most used spaces -- are they scuffed and chipped? I agree that they don't necessarily need repainting, but when everything else is fresh and clean, the worn parts can look all the more dingy by contrast.

Good points... thanks for the comments!

If the condition of the doors has not caught your attention and created a desire to paint them, they may not need to be painted. Take a closer look before deciding. If the doors and walls are now (and still will be after painting is done) different colors anyway, unless the doors look in need of paint now, they probably will not later. If, however, the doors are white any any of the new painting is going to be white, that could make a difference.

Doors and trim are currently white. Walls will be going to a light gray color.