If I invested when BTC was 1000 like a lot of other people did, I would be fucked as we speak.
True. But if you had constantly bought 100$ worth of BTC/month over the past year, where would you be then with your investment?
To answer my own question:
A constant 100$/month investment over the past 12 months would have bought you between 3.0 (month's highest price) and 3.5 (month's lowest price) BTC. So even now, at the bottom of a 6 months downtrend, you are still up 25-45%.
However, if you had started buying only 10 months ago in November, you would've accumulated between 1.3 and 2.3 BTC, putting you somewhere between -35% and +15%, which I admit doesn't look so bright any more. In all fairness though, we might see higher prices again soon, and right now everyone would sell their grandma just to get a chance to buy at last year's April bubble peak again ... *shrugs*