LOL. Right. How much value has the US dollar lost in the last 100 years?
'Volatile' means changing suddenly and unpredictably. A slow, steady decline of 3%-ish a year is not volatile no matter how much you want it to be.
BTC has been volatile in the past, but for the most part we enjoy great stability now.
You know, except for that 20% drop we had a week or two ago.
Going back to OP though, the price isn't that important. The thing is that just like gold, providing a specific amount of weight doesn't tell you much. But comparing it to a currency gives a user a more "local" impression of the value.
I really don't understand what any of this means.