Bitcoin is having extraordinarily high levels of value compared to any cryptocurrencies, that's why a lots of people access bitcoin as a primarily source of additional income.
Yes it become one of the source of income by many of us here so I think bitcoin is really a blessing to all of us that's why bitcoin is really extraordinary. Those people who keep worrying about the big deep of bitcoin is the people who don't believe with it. But always remember that bitcoin is the strongest cryptocurrency.