Well for me it did not really change people's lives though they made a lot of investors rich. It is confusing when I said that but it is a lot funnier when I explain it. Most of the Bitcoin investors don't really use their Bitcoins in their lives, instead they just hold it, do you get it now? Then they use these Bitcoin to invest in other projects making more profit but as I've said, they are not really using it since they are thinking that it will pump more.