Why couldn't you sell, make a quick 20% and buy back lower guys :/
It's not as easy, I'm sure plenty of guys sold their ETH at $1-2, or even $3 and $5 thinking the same thing, I'll buy back lower, well maybe they can do just that after 1 year, maybe not. A similar situation happened with XMR. Many of us think these low prices are not sustainable especially with M2 released already or rolling out.
So I agree that one should always take profits but really...crypto is so manipulated that you never know what to do, technical traders are full of shit, they don't know either unless you are a inside trader, crypto does what it wants and when it wants, it even uses and mimic technical graphs to make you think it's going to dump or pump, and I'm not talking about obvious bull/bear traps.
I personally have decided to buy dips when I consider the price to be low for my pocket (for example when it was back below $2...that's just nonsense). Same with other projects, if long term you can secure a good amount of the supply on low prices (for example, with $1000 you could've bought 1000 ETH back in January, that's a pretty decent amount long term if crypto gets real adoption or critical mass).
Same with FCT, having 800, 1k, 2k FCT should be more than enough long term. If M3 comes out it basically means their business is growing and giving profits.