People who have no good concern/gratitude, are just people who don't have confidence in their Bitcoin assets. I assume they have lack knowledge about Bitcoin, and don't realize the potential of Bitcoin future. While for experienced investors, must thank to bearish market because they have a chance to buy as many as Bitcoin at a cheap price. Without bearish market, investors can't get a chance to buy Bitcoin at a very cheap price.
They can buy at cheap prices but will not be able to sell at high prices is the bull market does not that. That becomes the point of interest here, since these investors are only looking for quick gains and not simple gains like us.
Bitcoin's potential is to become an alternative mode of payment and it has reached that but some one will always complain about something new they expect but not find here. Just market prices which affect bitcoin's reputation cannot be corrected easily.
I am sure those who understand these things will invest in bitcoin without a doubt.