To the OP
It sounds like this depression of yours is brought on by yourself. Sounds harsh. But think about it.
If I consistently download a podcast that's full of 'get-you-down' phrases like "you're an idiot," "nobody loves you," "you're a failure," "all your beliefs are wrong," "how can you believe that you twit!", then I go to a psychologist telling them that I'm depressed because of it, they'd probably look at me pretty funny. Reading atheistic forums/websites heavily slanted to make theist look like gullible buffoons and their position as the only reasonable one isn't going to help. Falling away from a faith isn't the same as falling away from atheism; you, unlike them, are actually losing something that's a part of you. From my completely unqualified opinion, that's probably why you're down.
Nobody likes feeling like an idiot or being called one; why, then, download a podcast calling you one?
A post I found through my creepish stalking of Rickd's old posts comes to find. "If hitting your head against a brick wall hurts, stop doing it."
Scientific inquiry and theism bashing are two entirely separate things. Theism bashing parties like to think that they're "scientific inquisitors" and others are "indoctrinated theist buffoons;" that is, obviously, false. For many, the wonders of the cosmos shout loudly for a creator being; a grand designer. You can explore science without atheistic dribble tainting its beauty; I suggest doing just that. Cosmological beauty has opened many eyes.