Oh God. For me, I would prefer using CASH than any other for now, because I don't think I would ever use something that is dependent to online internet and the interwebs. And not everyone in this Earth have the capability to use the form of bitcoin. It's going to be a long process before that happens.
Your cash will be worthless if the internet suddenly dies, because the whole economy would collapse.
Cash would not be worthless if the internet collapses. Cash means paper money and this is the context in which people mostly sue this word cash here in threads. Yeah if you taking about money in the form of digital currencies, you are definitely going to get a big heart attack if you lose connection to internet but that is very unlikely to happen. Bitcoin is the currency which will rather remove fiat from system.