Looking at the rapid growth the Croptocurrency world is experiencing right now, with new and promising Tokens (ONL, ATFS, BERRY etc) being introduced on regarly basis. I actually have a strong confidence that cryptocurrencies would get worldwide acceptance in the nearest future, and with Bitcoins topping the charts of all existing Bitcoins right now, Bitcoins stands to benefit from the newborn cryptos emerging. So if you ask me, I think it is quite impossible for Bitcoin to CRASH.
No i dont fear I dont have holdings of bitcoin. I have altcoins maybe if i will see the chart moving upward i will trade some of my altcoins to bitcoin. Not sure though. Sometimes it is more profitable to invest in altcoins but not all altcoins are trustworthy, a lot also are garbages.
I tried one thing with altcoins and bitcoins, then, I realized that altcoins are not meant to be held for long as they suck. A lot of alts rose in price hugely and at the instance of bitcoin dropping in price; they zapped to a very low level.
My verdict from then on is to only hold altcoins when they are very low or when there is a chance for them to start rising hugely and then when there is a FOMO, I get back into BTC. Anything crashing the don is crashing the followers if you know what I mean, but I better stick with the don to be safer.