Are depressed people more realistic?

[Whateverist]

you live a meaningless life ending in meaningless death in a meaningless universe
surrender to the truth of your atheistic nihilism

So you are a troll then? I was about to tell you in all seriousness that depression is never justified. It may or may not be true that a disposition toward realism can play a role in determining who develops depression. But it seems highly unlikely that it is the only or even the most important predictor. But since you are obviously just a troll who is here to shove your stereotype of atheists in our faces, I won't bother.