If you had to convert all your wealth to either Bitcoin or gold and keep it there for 10 years, which would you choose? Keep in mind the fact that Bitcoin has only been around for 5 years, and could be fundamentally different in any number of ways in 10 years.
Neither is a safe bet for 10 years in my opinion. Gold has been banned by governments in the past. BTC poses problems for governments going cashless with negative interest rates. Both could hide and be used on the black market. BTC is easier to keep safe and transport than physical gold. If both were banned I think BTC would be more common than gold. I think both would do well in a "race to the bottom" currency war.
If nothing fundamentally changes I don't think it matters. If it all goes south it probably doesn't matter either.
I think I would go 50/50 due to possible usability issues related to government intervention, but I don't have any wealth and to lose it all or 50% wouldn't hurt.
If push came to shove I think I'd take gold, but the two issues of physical storage and crossing country borders dilemma is killing me.