When the price is over $1200, a fall of $100 is almost nothing.
It highly depends. If you just have 0.1BTC then such a decrease in price won't impact you, but if you have thousands of coins, then it's completely different.
It's well known that the more you own, the more you potentially lose. In the latter case an 8% decrease results in your coins losing hundreds of thousands of $ in value. Definitely not what I consider to be *almost nothing*.
But that is true only if you bought at 1200 and who in their right mind bough when the price was 1200?
only speculators and newbies I suppose, if you bought at 900 you may lose some of your profits but the important thing is you still are generating profits with your investment on bitcoin.