1g/day for a year only cold sweats? i call bullshit, or absolutely shit heroin. there is no way, absolutely no way.
Here is what I am thinking, and OP correct me if I am wrong. Seeing that they are from NJ, they are likely getting stamp bags in bundles. It used to be that these bags weighed about .1 each, making a bundle about a gram, so I think that the OP is using that type of system to measure their use. In reality, a lot of bags don't even weigh .05 in NJ. I know people that weigh their bags out and .1 bags look huge compared to the usual bags going around. I have heard that Camden has the fatter bags, but even then .08 is probably what they weigh. I could be wrong about how the OP is considering the weight to be what it is, but I would at least cut it in half if they are talking .5 = 5 bags or 1 gram = a bundle, because it's more like .04 = 1 bag so a bundle would be .4
Anyway, on the topic of how bad heroin withdrawal is, I never had too bad of a habit (most I was doing was .4 nasally 3-4 days a week) so I can't fully comment on how bad the withdrawals for a heavy habit are. However, when I was on 16-32mg suboxone for 18 months (back when doctors used to prescribe 32mgs as a regular dose, and before I knew anything about suboxone or BL) I did a half-ass taper over a couple of weeks and that withdrawal was pretty horrible. Basically I had moved away and thought I would be good since suboxone.com said there were a few doctors in the area, but they ended up having like a 6 month waiting list, and referred me to a doctor in the next state over which I was not about to do. Plus, since this was a while ago before suboxone was well known, I wasn't too worried since afterall, the doctor assured me that the withdrawals from suboxone weren't that bad.
I'm not going to get into detail, but on day 3 of no sleep I was the closest I ever was to killing myself, and I poured my whole xanax script into my mouth, but then was smart enough to realize that it wouldn't have killed me and I would have just looked like a fool once my roomates grew concerned about me sleeping for a few days and called 911 or something, and then I would be stuck detoxing from benzos too.
IMO, if you can get 2 hours of sleep or more while kicking, then you either didn't have a serious habit, or you had some strong sedatives to help you with sleep. If you have kicked a benzo habit before, or something like a high dose of methadone or bupe cold turkey, then kicking heroin doesn't seem so bad, unless of course your daily dose was high. I would definitely consider a gram/day high, but like I said before I don't think the OP was doing that much, or the stuff they were getting was crap.
Edit: During my tl;dr post, it was confirmed that the OP did indeed use bags as their form of measurement, so in reality their habit wasn't as big as they thought, unless they are the only person in NJ that is still getting .1 bags, which I highly doubt for obvious reasons.