Some people don't see Bitcoin as a normal currency and think it's too risky because its value can change a lot. They also worry that it's used by criminals for illegal activities like money laundering. However, other people think Bitcoin is amazing because it's different from traditional currencies and could change how we use money. Nobody knows for sure what will happen to Bitcoin in the future, but people are still talking about it and interested in it.
Yes for sure, Bitcoin is not like our normal currency issued by bank, and I don't see any reason why people should see it that way, because both are quite different both in usage and functionality, because just as our normal currency, also known as fiat is centralized and controlled by the government of a nation, Bitcoin on the other hand is a decentralized digital currency not controlled by anybody, unique and has limited supply.
While secondly, that people use Bitcoin for illegal activities does not mean Bitcoin on it's own is bad, and the future of Bitcoin is bright, of which I will love to advise that if you have any funds you intend to invest for like 5 - 10yrs, you should rather invest it in Bitcoin rather than fiat that will be affected by inflation.