We are in a bear but still there's a lot of reason why you should stay, and I listed some of those good things to stay calm and why you need to trust this market again.
1. Cryptocurrency can bounce back high in this current dump because of its own technology. the potential growth of this market is still 101%.
2. Bear market is normal, and if you look at any market after the dump there will always a rebound, where its possible to make a new all time high.
3. Now why some countries make bitcoin legal? Why some big personality invest in some project? Well, its simply because they saw a great potential for this cryptomarket, and you should too.
This may not help you to stay calm and stop panicking but try to imagine the market five years from now. Any thoughts why people should stay in this market?
To point number one 1 I would like to do some slightly correction. Instead speaking of crypto currencies you should replace two words with just one word, Bitcoin!
Many altcoins will not survive if we keep staying in this bear market and ranging on a low level for another 6 months. And maybe that's the plan by some big players. To wash out all out the crap in the space. If Bitcoin decide's to make a deep deep and long dive, like 2014/2015, I can assure you many coins you see on cmc today won't be there anymore at the end of the year.
You're right that those kind of bear market are normal for Bitcoin. What goes up that crazy, also needs drastic corrections. We've seen this plenty of times now.
And in general you can say that Bitcoin's fundamentals are looking really great. For instance more and more miners are entering the space, which will reduce centralization in that field.