Bitcoin is just the gold standard but worse. With gold you can at least dig up more of it as your economy grows. Bitcoin doesn't care about the real economy.
1. You need to fill-in paperwork and be on a mercy of a local DHS official to be allowed. At any time regulation will and can change without you knowing about it.
2. Try to move it without paperwork and risk losing it all
3. Try to store it in the bank and risk of government/bank/courts to lock you out of your gold savings.
4. Try to store it on your own and risk losing it all to crime.
5. Entering another country - same risks with their customs as above.
6. Moving bitcoin across borders is a bit easier
Bitcoin (if successful) will serve as an international safe haven from reckless monetary policy. It counterbalances fiat, it doesn't replace it.