>I've been fapping for three hours now and I'm still on edge, but it just won't come
This is how things have been like for me for basically as long as I've been cumming, except not quite as dramatic. Usually takes me half an hour or more to cum, and did even when I was a horny teenager cumming three or four times a day, every day; and even if I rub so fast I start a fire on my dick (uncut, so I know lack of sensitivity isn't the reason).
Back when I was a NEET I used to routinely spend nights fapping to porn for two or three hours nonstop before cumming. Was very enjoyable, and not at all difficult to keep from cumming that long; except for the last half-hour or so, I wouldn't even be "edging".
With the exception of less than ten times in my life that were just a fluke, I've never known what it's like to uncontrollably reach orgasm in less than a few minutes.
Back when I was still living with my parents and a lot younger, I actually toyed with the idea that one of them was somehow sneaking an antidepressent into my food (anxiety runs in my family). I dismissed this because I started buying and preparing a lot of my own food, and now I live alone so it's irrelevant.
But it's still fucking weird. Doctors talk about "hormonal imbalances" all the time, and I wonder if I just naturally have one. Do you know what the specific chemical mechanism is that causes this side-effect?
>not afraid I'm going to be murdered when I walk from my apartment to my car any more
Depending where you live, this isn't really paranoia.