This applies to a lot of things. Don't force people because the more you force them, the more they believe the opposite thing. If you try to convince someone even in the slightest manner to use bitcoins, then they will have some negative thoughts about it like "Why is he trying to convince me to use bitcoin?", "What are his benefits for doing so?" and so he will just think that bitcoin is a scam. There will always be people disliking the things that you truly like/love.

We all have different perspective because we all had different experiences and we all came from different places. You might know the truth about bitcoin that it is indeed not a scam and it has a truly legit market, then that's just you. Others are misinformed and some tend to believe only negative stuffs and no matter what you do, you can never convince them. It's them that's missing out and it's them who's wrong, not you. And I truly believe that that should not be a concern of yours, just do your thing and let go of these people who don't want to be educated.