You are correct that past performance does not guarantee future results, yet you still have to decide how you are going to allocate any investment that you are going to make, including if you happen to be a no coiner and you decide to stay a no coiner. that is a decision, and so good luck if you choose to stay on zero when it comes to bitcoin when the most likely better conclusion would be to figure out what your target accumulation level should be, perhaps somewhere between 5% and 25% would be a good start, but hey if you prefer to stay on zero, that's surely your right to make that decision for yourself and your own financial circumstances.
I like to think that bitcoin's an exception to that rule, 3 is sure still a coincidence in my book but knowing the popularity of bitcoin and the faith of many investors about it's growth and their devotion to it grows daily, I don't think that bitcoin will ever disappoint, it might take a long time before it will go up again once it has gone down but it will always surprise us when this happens, bitcoin's not any kind of altcoin out there that once it shows it's blaze of glory, it's all downhill from there, bitcoin doesn't really have to prove anything at this point, institutional investors are recognizing it as a legitimate investment tool even though it's still as volatile as ever. It's really weird to me that people are still on the fence when it comes to bitcoin investing, if you really want to invest in it, you probably have a really good benefit if you stop thinking and doubting and just start accumulating through DCA no matter what happens to the market.