Most people think that Bitcoin is a pyramid scheme, and they don't want to hear anything about it. But all the fun begins when you start explaining, to those who agreed to listen, that Bitcoin is not a pyramid scheme. If your audience don't have technical background to understand how Bitcoin mining works, you sound to them exactly like one of those guys, who persuade them to join a pyramid scheme. Why? Maybe because today it's a common knowledge that "It's not a pyramid scheme" is a phrase almost exclusively used by people involved in pyramid schemes.
So, instead of spreading good news about Bitcoin, I think it's better to encourage people to educate themselves. And then, when educated, they will come to Bitcoin on their own.
Bitcoin wasn't created for investing in it. That's what pyramid schemes are for. Bitcoin is the money of the future, and just so happens that some people are using it today already. Yes, the price of Bitcoin will most likely rise big time in the future, but this will happen not because more people will invest more money in it, but because much more people than today will be using it as money.