I don't think it's really depression. I was the same way, I pretty much lived in front of my computer for a while and got most of my 'emotional responses' from it's content. I was flooded with cute cat pics, depressing stories of loss, funny GIF's, learning, you name it you can find it on the internet! After a while I didn't get the same thing out of my day to day life. The best and most accurate way I can liken it is to (in my own personal experience) sex and watching porn. Porn is like the 'best of' or 'top 10' which is what our generation (80's, 90's, 00's) is becoming, I fear, addicted to, and so when it hits in real life in my experience it was weird because I was saying to myself oh it'd be better if this person were a porn star, or this that and the other thing, and I found that I didn't really enjoy it. I think the problem is for you is that your mind has become used to the internet to stimulate it and it's gotten used to a level of stimulation that the internet can provide because it's constant and instant. Look at reddit or 4chan, don't like the topic you're reading about (which keep in mind it's keywords that are used to target audiences) then fine, go onto the next one, and so on and so forth. When you're out in the real world it doesn't happen like that, there isn't the instant gratification everywhere that were used to. I think the problem is that you've gotten to the point where you've eclipsed the amount of stimulation the internet can throw at you, and you're bored with it and you want more, which I think is a perfectly normal human response, but what you have to do is to find ways to limit time that you spend receiving instant gratification and get into the habit of doing things that take longer and have more meaningful rewards and really switch your thought process around.
Another personal life example is I smoked a lot of pot in my early college years, so much so that it started to take over my life. Eventually I just wanted to be high, I'd wake up and smoke, smoke all day, do stuff to buy time between smoking sessions, and then rinse and repeat. Eventually I found myself at a similar crossroads where I was completely out of whack with society and expectations because it was easier for me to sit on a couch and get high all day than go to classes, spend time studying, going to work and etc... I went through a crisis or sorts, and through help went the complete opposite and totally devoted myself to school and when I started to see good grades and success there then I realized the most meaningful life lesson I've learned yet, which is balance is everything. You need those instant gratifications from time to time because they keep you sane along the way to greater accomplishments, but you need to be working towards those greater goals as well otherwise when you've gotten tired of those instant gratifications because they don't hold the same power as they used to, what are you left with? You're left with yourself and where you are in the moment, which can be the most exciting or the scariest thing in the world. After failing out of college, I'm now a 4.0 student who gets drunk 1-2 nights a week and can keep up with it all, and I've regained a lot of those feelings that I thought were lost.
Feel free to PM me if anything I've said clicks with you and you wanna talk, it can be a bit scary feeling,.
