Selling Bitcoin is like selling any other product, and good selling doesn't mean you actually selling the product, no you fulfill a need. I get a commission on every sale a make, a lot of colleagues of me don't bother to try selling something. Because we or not a salesdepartment but customer care, so we don't need to sell to get a good paycheck.
Still I discovered that selling a lot is pretty lucrative, so I sell the most of the whole department. I even sold digital tv to a blind person, did I do that by summing up ALL the positive aspects of digital tv like better image quality. No, off course not that would be plain stupid and would get me to argument things that I could not argument against. I just used one thing and that is the better sound quality and took that to sell the digital tv. Customer happy because she liked to listen to the tv, me happy because I got an extra sale.
Now how to use this for selling bitcoins, easy.
First of all, what may seem a positive aspect of bitcoin to you, may be a negative aspect for the person you are talking to, so why mention it in te first place.
Maybe there is 1 negative thing with bitcoin for a person but 10 things that are so great for that person. If you start talking about bitcoin and summing al things up that look great for you, only the 1 negative thing will stick in the head of that person and while you summing up the 10 other things that would convince that person for using bitcoin. He is already thinking on argumentation for that 1 negative thing. And he simply won't hear those positive things.
So don't start by talking about bitcoins, instead let the person talk about what he uses now to pay for stuff. And then ask him what he likes about what he uses now, he will sum up a few things and you keep those things in mind. And specifically the things that are also applicable to bitcoins. Than ask him what he doesn't like about what he uses now, you probably get some things. Keep those in mind and especially those where bitcoin solves that problem.
Than you gonna talk about what you use, bitcoin. You than sum up why you use bitcoin. Offcourse you say al the positive things the person mentioned with the payment method he uses and on top of that you mention it also solves the problems the person has with his payment method he uses now.
You will get some arguments maybe, but much lesser and much easier to counter.
You: I took a look at your webshop yesterday, nice shop. How do I pay when I order something?
other: Ow you can pay with Paypall
You: Ow, you like Paypall?
other: Yeah it's fast and easy. I implemented it in my shop, when someone pays me, I log in to Paypall and see the payment.
You: Is there nothing you don't like with Paypall?
other: Yeah, I hate it I got scammed a few times by people who payed and than did a charcheback after I've sended the items, and the fees are huge.
You: I don't understand why you are not using bitcoin?
other: how you mean?
You: Yeah, from what I understand, you like it that you can implement paypall in your website and it is fast and easy. With mybitcoin you can do the same with bitcoins. And the most important thing, people can't take there money back after payment and they don't have to pay a fee. If I were you, I would take a look at it.
Off course a very small example, in a real conversation it will be all a little bit longer but I hope you get the idea. Do you think this person wants to hear a story about the central banks and the goverment printing money and stuff? Probably not.
And if you would have said it is anonymous and this would be a trigger for this person to think of money laundering, you could have ended with a unnecessary hard to tackle discussion.