I'm fairly new to cryptocurrencies, but my sense is that crypto assets attract people who think for themselves and value personal freedom, e.g., Libertarians and others who are independently-minded. It also seems to me that crypto assets also attract a substantial number of younger adults - both men and women. A lot of younger people have seen what's happened in the financial markets over the last 10 years and believe it's riskier to invest in the stock market than in cryptos! According to this recent article, almost 1 in 3 Millennials would rather invest in bitcoin than the stock market.

https://www.zerohedge.com/news/2017-11-09/1-3-millennials-would-rather-own-bitcoin-stocks

While a disproportionate number of crypto investors are men, I think a big factor behind that is that most of the early adopters of crypo were very tech-savvy. I'm referring to people like those who worked in Silicon Valley, and who knew about bitcoin and could debate its merits with smart friends and colleagues long before the rest of us could. (They bought in at extremely low prices, too!) The tech industry has long been disproportionately male, but I believe that will change as more girls study science and engineering in college.

As the public becomes more knowledgeable about the crypto world, my hope and expectation is that independent minded people of both sexes will participate in and benefit from the long-term upside that crypto/distributed ledger technology will bring to society.