I've bought bitcoin and some altcoins. I'm also interested in buying gold and I might buy a small amount. The biggest problem I see with gold is that if you have a lot of it, how do you store it? I doubt I would want lots of it in my house.
You can always keep gold in a safe or a safety deposit box at the bank. If you're going to have so much that you can't store it at $1200 per ounce, then that's a good problem to have. Silver gets difficult to store, but gold shouldn't be too much of a problem.
If you're able, you should buy both. This should all be about diversification... stocks, bitcoin, gold, silver, alt coins, you name it. You don't have to choose one over the other, but rather hold a diversified portfolio. If bitcoin price drops dramatically, which it has in the past, then you'll be glad you held other assets as well.