Total Market Cap Crypto has reached it's 4 years low trendline

The Total Crypto Market Cap has reached it's more than 4 years bottom trend line (starting from august 2015)
Breaking this key supportlevel would cause serious damage in cryptoland.
But if we can stay on this trendline, it's the bottom to jump into crypto.
What should you buy? BTC or undervalued serious ALT projects? The choice is yours...