There are few valid reasons why the world needs virtual currencies like bitcoin.
1. Bitcoin was introduce to us because when US economy went down all other countries jobs and currencies are affected.
2. Virtual currencies arent affected by fiat so even if a certain fiat currency is down our virtual currency (bitcoin) is not affected.
3. Virtual currency like bitcoin has no tax which the government are required for us to pay.
4. You can do fast transaction without the hassle of giving a certain person or company to much information about you.
1. Global Economy is connected - bitcoin might be sitting happy on sidetrack of it - but I assure you when we will see another global economic crisis bitcoin price will skyrocket -
which means that bitcoin is affected by fiat economy - just not in the standard way we imagine.
2. Fiat crisis = bitcoin gain.
3. Do you honestly think that cryptocurrencies won't be taxed in the future? For now, it is a kinda fresh concept and government are baffled by it.
I expect that soon bitcoin/cryptocurrencies will be fully legalized and certain tax regulation will be put in place.
4. In most cases you will still need to fill some information, you cannot use services without fist crating account first, right?