Some people think that bitcoin is a scam as a result of their frequent encounters with fraudulent activities using bitcoin, and sometimes, bitcoin platforms.
Because you have been scammed by bitcoin multiple times before, that doesn't mean you should tag it as a scam. All you have to do is do more research about bitcoin, discover why you are being scammed, and learn how to protect yourself from scammers. Some people are looking for quick money, which is why they end up getting scammed. A lot of people have been scammed multiple times with fiat currency, so why is fiat currency not tagged as a scam? Why is it that people keep on using fiat currency? If you don't know about something, don't just tag it as a scam, try and do more research about it first before concluding.
No matter how genuine bitcoin as a currency is, frequent encounters of scam with it or its platforms can change people's mind to consider it as a total scam without distinguishing between bitcoin and scam, but that is not appropriate.
Scammers are always trying to make use of any opportunity they have to scam people. Bitcoin is a currency, so we expect scammers to make use of it just the same way they are making use of fiat currency. All we should do is try and look for possible ways to protect ourselves from scammers. Every currency is being used by scammers, and just because scammers are making use of a particular currency doesn't mean we should stop using it.
For example, for the fact that pound or dollar is a genuine currency, does not mean that scammers can not use them for scam, likewise bitcoin.
It's just annoying when I see people saying bitcoin is being used by scammers. Those people don't have anything to say against bitcoin. That's why they do end up coming with things like that, because I don't see that excuse as a reasonable one to me. They are just looking for fault in bitcoin. Since they can't get it, they decided to start using bitcoin as a scam excuse.