The total supply of Bitcoin doesn't affect the total usage of it.
Speed of it and the fees are the ones affecting it.

Circulation of Bitcoin will not be affected as more and more people will accept Bitcoin but this will just happen if there are certain tweaks in it like the fees and the speed of it. See what is happening to the US Dollar right now. It's price is slowly withering already. I would probably like to say that I hate fiat but I can't since it is the most widely used payment system of the merchants and establishments. You can say that it will not be used as a payment system or not and that is ok.

Don't compare Gold and Bitcoin too because the 2 of them have lots of differences.