so why is btc regarded as the king of coins and it's so unique than others?
Think of it as the major mother/father of cryptocurrencies.
Though there are some projects that seem to be good. You'll never see the goodness of bitcoin if you are focusing to altcoins. It's the first and only crypto that has been born before that started everything so its safe to assume that its the king of all cryptocurrencies.
Bitcoin is the first cryptocurrency ever introduced in the market.It is the father of all the cryptocurrencies.It is the most demanded cryptocurrency in the world.It has the largest number of users and it is the most expensive and valuable crypto present.Bitcoin is a money making machine and one should definitely take advantage of it.It is the easiest way to earn a lot of money and that too in a short period of time.Bitcoin has also made many people rich and that is why people have a lot of faith in it.