Actually people reading, participating in and influenced by this thread have entered into bitcoin at various price points between 2011 and now, and aspirations within OP and repeated thereafter have demonstrated that over time if people have engaged in a front end BTC accumulation style, the investment into bitcoin has tended to pay off quite handsomely in a fairly short period  of time and has been much better than other kinds of investments..... Even if you have screwed up various aspects of your BTC investment and you bought high, you still could have had really great profits, as long as you either just held on to bitcoin or continued to buy bitcoin with either dollar cost average investing or buying more BTC on dips.

Even though $20k was within some BTC price expectations, it was either sooner or higher than a large number of folks considered to be amongst the most bullish of expectations, even as late as mid-July 2017. I will admit for me, that BTC's price performance in late 2017 going up to $20k was about 4-5x higher than my most bullish expectations, and BTC fundamentals continue to be good and these kind of price corrections and attempts to push the price back downward are all part of price cycles, so maybe even if it takes several years to return to $20k there remain great BTC fundamentals that will likely bring BTC prices back up there.. maybe best case scenario is a few months, and not as good scenarios may take a few years for BTC prices to return to $20k... still not bad for people just entering into bitcoin now, but can cause a decent amount of patience for people who bought between $10k and $20k, and may have to employ strategies of waiting or even continuing to buy with considerations of the decent chances that BTC prices will continue to go up and BTC will likely continue to be a decent long term investment, comparing it to other asset classes.