I'm pretty sure the people who are the richest in the Bitcoin world are the ones who just held.
I second that. I've made quite a few BTC by trading during the bear market after the obvious bubble pop, but that's just an "impasse" in my usual strategy (buy & hold). There's a clear chance of increasing your stash when a bubble pops, that happened in 2011 and happened this year too. But 99% of the time buy&hold is a winner, and the only purpose of trading in my book is to increase one's BTC stash.
Additionally, most of the times I spent BTC I fucked up. I sold a few hundreds coins to buy ASIC miners, and I made back only 50% of them so far - with the increasing BTC/USD exchange rate noobs will keep throwing fiat to ASIC miners like there is no tomorrow, driving the difficulty crazy high just because they do not realize that 90% of the times is better to buy BTC directly. This has been historically true, like its historically true that the ones who first bought and never sold are doing better than anybody else.
One of the few investments in BTC that were good to me were LTC (bought at 0.002 and sold at 0.012) and MSC (bought from Exodus address, not realized profit but x10 so far), most of the others I screwed up (my "cRipple" investment lost 75% of its BTC value).
On the contrary, buying BTC has always been a GOOD decision. This is historically true. Nobody lost money by buy&hold so far. This is a hard cold fact. Personally, I've bought most between $10 and $20, but I also bought at $130ish - and it has always been a good choice. BTC never fails on you