Our world changes constantly and if you want to move with the times and to progress along with the rest of society you should accept bitcoin. No problem in using usual money as well as digital currencies if it gives you comfort. If bitcoin disappears it doesnt mean that fiat money will grow.
Great answer mate here,why people keep on comparing this two currency while for sure both are needed by whole world and will never lose any of one..
For me even if we cross to fully computerized world,fiats will remain and will be use..because world will never be completely changed by new world there will always be small communities that may transact manually