Buying gold is very easy. But the problem is when it comes to selling.
Much more difficult than buying bitcoin. To get bitcoin all you need is an ATM. To buy gold you need to go to a vendor and make sure the thing you're getting is certified. Then you need to carry it home safely. What if you get mugged on your way home? They won't steal your bitcoin, but they could get your wallet and that ounce of gold you were hiding there.
To sell it, technically you just need to go to the same vendor. The problem is that you can't really move it around. For instance you have to declare it at the airport and there's a limit on how much you can carry. Forget about taking a million $ in gold through customs. They'll need all kinds of paperwork and will ask you why you're taking it to another country and what you're planning to buy with it.
Bitcoin is something you can move around at will without anyone knowing about it.
In short, handling gold is quite a challenge, whereas, with btc, you can do all transactions via online and without going out of your home. Now, it is up to the investor if he is willing to buy gold and face the consequences but he has assurance that its value won't drop overnight. Let us put it this way, gold has more stability in the market over btc. Weigh your chances and decide for yourself if you are willing to undertake such circumstances when it comes to btc or gold.