Bitcoin can be a replacement of a physical money just like a credit card but the difference is no card to pull it out from, but either you buy/sell bitcoin, you are a miner or you own a bitcoin mining site, or you use bitcoin faucets to earn little bit of bitcoin.
But at the fast rate of increase it's having like when I checked my Electrum, one of the leading electronic wallet of Bitcoin I can see that it has gone from 100 bucks to 8,000 dollars and even increasing.
I for one, mine bitcoin using a cpu miner and it's too slow, that's why at some other time, I do programming, web designing work, and even forum administration getting bitcoins as payment. In the U.S. commonly use is coinbase so that you can exchange your bitcoin with some other crypto-currency that is not that as large as bitcoin but like decreased in it's value, like the monero, bitcoin cash, litecoin and electrum of which the last crypto-currency that I've mentioned only supports GPU mining or it means that you have to buy a half a million gadget to mine for you which in the Philippines is not that feasible because of the electric bills that you have to pay here are very expensive and the power fluctuations that will wreck and ruin an ant miner - one of the GPU miner that is used by majority of electrum miners.
But in the end, all these little crypto-currencies you can exchange for a Bitcoin will make life easier. I remember I was able to exchange my Bitcoin to our Philippine Peso and was successful to encash it twice using egivecash from Security Bank, that's an exciting story to tell and I've experienced Bitcoin. Now I'm into Bitcoin auto mining and also doing work online getting paid via Bitcoin.
I"m also creating software that actually sells for Bitcoin and running a forum that pays in Bitcoin.