Listen, BTC costs as it costs at the moment. Yes I have had 10-20 BTC few years ago and I have paid that BTC for the things which I could buy for 0,0001 BTC right now. But I don't regret becasue of it - on that time I haven't regret and now I shouldn't regret about it. Because BTC is not the money. BTC is money analog. That goods I've purchased with BTC few years ago still costs the same in USD today. And I do not believe that there's lots of people who has bought in 2012-13 and were waiting for Dec 2017 to sell. I think there's only 10-20 people who did it. And about 1000-2000 who have found that they have forgot few BTC in their wallet few years ago. Listen what I'd say: buy now!