For you which could be the most important impact that bitcoin have made, will make or has been making to our society?
The important impact is you can transfer money in a instant and you can pay bill using bitcoin. No need to go in city to pay your electricity just in minute in bitcoin you can do it. And bitcoin can corverted it into cash instant using the cardless atm.
Bitcoin is still not instant.. it is still depends in the transaction.. if you are paying a large amount of fee you can increase the speed of your transaction but not instant just what you think. there is still other payment processor that its so fast that actually instant..
The good thing in bitcoin i think bitcoin is less hassle to use and we are just paying a small fee unlike in other payment processor.. that is why bitcoin has high impacts.
Bitcoin is good in massive transactions. You can send many bitcion on multiple addresse on one process only. Bitcoin has a small fee also but it is not quite fast. You have a choice if you will add additional transaction fee to fasten your transaction