What attract investors and traders to crypto market?

Digital currency sales reached at $13.7 billion in the starting first five months of the year 2018, it's nearly double the amount raised for the whole of 2017. Technology startups have raised funds by selling cryptocurrencies by ICOs.
This year's virtual currency sales from 537 coin offerings topped last year's total of $7.0 billion.
This happen becouse of multiple returns means 5x, 10x earned by traders and investors in very small time frame and everyone attracted to earn huge amount but very few people knows about positive and negative of the crypto market leanring in technology can cut the losses in this market.
So keep investing with learning.