Right now, no, they're not accepted in enough places and it doesn't make it a possibility. In the future, definitely. The biggest roadblock right now is volatility and that should decrease in time. The technology is there and it's proven it can be a better and cheaper alternative as long as scalability issues are resolved.
The volatility is huge now because really there is no real life usage or some pretty much level of adoption right now, so it is something we should expect. If there is a real demand for it for daily usage, I do not think this would be a big challenge due to the high level of demand for it.
I believe as we move ahead, a lot of things will change anyway but right now we are just having some speculative assets in our hands and in the real state, no much use for daily payment unless you are lucky to hit some merchants in your country accepting it. Otherwise like many Asian country people, we all need to hold our bitcoins and wait for some merchants to start up.