I guess someone wanting to "feel" is something that makes you "depressed". I don't consider being "apathetic" the same thing as being depressed thought, well you said "empty" not apathetic, but they are related.
I am very apathetic toward the circumstances which I came to be living under, that is my near reality, I just feel I don't care about what most people find interesting or important. Life is a game, a boring one, that most people are too deep in it to realize it, so the only thing for me is to spectate at this moment.
I do envy them from time to time, to be able to "feel" or put their feelings in what doesn't make me feel anything anymore. I know that if I lived in a different way and took different decisions and made different things I most certainly would have been adapted to what my surroundings have to offer. I understand that someone who is not very interested anymore in [money or dreaming about having a wife or family] doesn't quite fit what is to be expected, the canon. Of course If I ditch the ["happiness" package] how would I be able to be happy? no one teach me that (so I will have to figure it out by myself). If I consider something is wrong with me because of that then I would be depressed, If I don't, then I'm just apathetic. That's how I differentiate depression anyways.
I was there sometime, the feelings, but I wont be able to put myself in that position anymore, like Neo (and the others) couldn't be able to live in the matrix after having awoken from it. But OP, I think this is a step for something else, something better. Have you seen how the exterior looks and feels like? maybe then you should try looking into the inside and see what you may find there. Our societies gives us too little time for that, we are too busy, too entertained, too medicated and too tired from work to take a time and wonder what it is that make us feel something in the first place. Id say, that "symptom" u should take it as an opportunity to get to know more of "yourself", your true image, instead of making it a pathology.
a bit off-topic:
Psychologists often forget that the circumstances of the environment doesn't allow for any development possible. That happiness, very often, comes predefined depending on the immediate culture and environment. That's basically the problem I have with "depression". Individual differences are often taken as a mean to create psico-pathologies of the individual development uncommon to society standards. So we, who do not know how to be different, always imposing our means of living and our values of things onto others cannot fathom a different way to be. In the end our work as psychologist end up being that of an "adaptionist" or "fixers". We end up being agents to the society and the powers that holds it in place. The "fix" It may work sometimes, but not always.