Many people express different types of bitcoin. Someone says Bitcoin is not a currency. Again someone says that Bitcoin is only a bubble, it will never be universally recognized. Some countries have banned Bitcoins so that illegal activities will not be increased in the country. Because some of time bitcoin use for terror works.Some people say that investment in bitcoin is not profitable. There are some other such complaints about Bitcoin.
But the funny thing is that even though there are so many complaints, Bitcoin has become popular all day around the world. I think we need to change our mind about bitcoin's.

Really, people's complaints about Bitcoin are correct?
The complaints themselves are correct (slow transaction speed, usage for illegal activities, constant price manipulations), but the technology can overcome all those obstacles. Lightning can increase the speed and decrease the fee for transactions, a kind of "black list" of wallets can help to combat terrorism and additional regulations can reduce btc volatility. Every problem can be solved in its unique way.