Gold can be confiscated and actually has been in the past. Also, it's easy to lose. I personally feel gold has less value than a globally distributed proof of work and value store. Saying that, at what point did I say you should buy gold instead? By all means, hold both BTC and precious metals as a part of a well diversified portfolio.

Maybe there are better decentralized currencies (that's a matter of opinion) but there were better operating systems than Windows. It's about mindshare.

Honestly, just look at BTC's performance over the last 10 years. It has been the #1 asset class by far.