The most important thing about bitcoins is that when u buy things with bitcoins you dont have to give tax . It is very important to note that bitcoin is being widely used in the deep web for different purposes.other than that bitcoin is being used for other different purposes also like shopping , buying stuffs from the internet.
well it depends on where you buy it from, if it is from an ordinary online shop then you would still need to pay taxes as they usually just convert bitcoins to fiat and then process your order in fiat instead of bitcoins. I prefer bitcoins over fiat because the price of the bitcoin can be booming in the future while fiat is always gonna be stable or even go down a little bit with time.