--snip--
If so, it is really strange for me, why the people in France do not buy large amounts of gold for storing their money. Maybe it is difficult to buy a micro bar of gold? Or it is difficutl to sell it because you have to prove that your gold is pure?
As I have explained, I don't see that the bitcoins are really more easy for use than the gold.
No, not really, you can buy investment gold bars starting from 1 gram if you want to. You can buy them online, and probably also in person. I would very much doubt it would be any problem to sell them.
Most people don't like risk tough, they don't like the fact they have a couple thousand euro's worth of a physical item laying in their house (or in their safe deposit box). Burglary is something real. Most western European country's feel that the life of a burglar is worth more than the items he's stealing, so most western European country's would punish the victim if he chooses to defend his/her property using any force.
Apart from myself, i don't think anybody in my extended family owns gold, bitcoin, ETF's, shares,... They just keep their money in a bank account and get a very low interest (lower than the inflation). It's not because they cannot buy these things, it's because they're afraid of losing their money (either by a market crash, gold price fluctuation, bitcoin bear market, or getting robbed). They are so uninterested in any of these things they don't even know how they work, or where they are traded.
At least, that's how i perceive this.