Hello & Welcome, ApatheticGuy! I'm definitely in your demographic.

1) What medications did you take that made you regain emotions/motivation/interests in doing stuff/interest in life again

In the earliest stages of my descent into depression some of the SSRIs did not interfere much with my ability to sustain interests. Nevertheless, the meds did not prevent everything from becoming increasingly difficult over time, and depression eventually took over my life.

That said, depression is not the only thing wrong with me. I have a couple medical conditions that long went undiagnosed, probably due to the doctors attributing all my symptoms to depression. Unfortunately, treating those other conditions has not alleviated the depression.

2) Do you ever regain the interests of the things you used to like?

A little. My powers of concentration are a shadow of what they once were and my mind wanders. Apathy dominates, but I experience times when I can lightly pursue a few old and a few new interests. All of these interests, however, are solitary. I remain a hermit.

3) Do you feel like person you were pre-depression while on meds?

Never. I can't tell if that's because of the meds, the depression and anxiety themselves, the other stuff or the whole stew.

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I don't know if my case is "hopeless," but I now live my life without reference to hope. "Hope" is just not useful for me in managing and coping with my current existence.