Genuinely want to know what prevents your friends/gf/ colleagues from investing? Did you have any barriers when you first started?
The only hesitant for me was when I first heard about Bitcoin in 2013, I was a nobes so I could not fully understand what Bitcoin was only that I know it was used to play games or buy stuff online, but how to get access to satoshi became a big set back for me, until recently when I finally had the resource to invest and hold bitcoin.
Presently, I have tried to encourage a few of my colleagues into holding some of their savings in Bitcoin, but their major drawback is that Bitcoin has been used for many unretrievable transactions, but I always tell them that even the dollars are also used for such transactions and that is what makes a currency of total control once you own it, it your responsibility to sustain and secure it.