I've reached a point where I don't even try to convince them any more. Everyone I care about knows what I do and how I make my money and they will come to me when they're ready. I found this is the best approach to maintain the friendships without being the friend who constantly talks about his magic internet money.

But I do make a point of paying with my BTC debit card (with a fat orange sticker on it) whenever I go out with them. It's like a subliminal message to them.