It's not to be expected that everyone loves Bitcoin and cryptocurrencies. But to have positive attitude towards cryptocurrencies first you should understand how they are functioning and what are the benefits. And many still have problem with that.
I also agree that some had bitter experience with Bitcoin and that is the reason why they quit.
So good approach is trying to explain but not to push and still the best method is when people try on their own.
LMAO, there are a lot of people in this Crypto space that doesn't know the function of Crypto Currencies and all they know that this digital thing can multiple their money with a lot of folds and this is the sad truth of the reality. Remember, way back in late 2017 when hype about Crypto Currencies is real and a lot of people all over the world are getting "FOMOed" and the majority of those people dived in the Crypto space without any knowledge about this industry and only thinks how will they multiple their precious money with this money making machine(in their point of view, not mine LOL). I guess most of these people now already learned their lessons in a hard way.
I used to argue with them, like a few months before, but right now I just avoid them.
That's the best thing you have done! LOL
Seriously, it's a total waste of time to argue with people that don't believe on Crypto Currencies and they talk a lot of senseless stuff like "Bitcoin is a pyramiding scheme" "Bitcoin is a scam" "Bitcoin is networking", I don't know where these people get this kind of words and where they get this info about Bitcoin.