Yes it's really changed the world. It has really helped a lot of people earn more and live better lives
I for one am a testament about how Bitcoin is changing the world, I used to work from hand to mouth and that's all that i did until i came across bitcoins, although i was initially buying and selling only for profits, i came to realize that if i could buy and save without using them, i will make even more profits and that's what i have been doing since.
It's changing our lives. Most of us are having an extra income with bitcoin. We enjoy the free bitcoin income without goverment control and government taxation policies.