yes the US Dollar also is Volatile but its volatility not every day vs Bitcoin
the bitcoin volatility every day and it is depends on the sell and buy
yes your words it is true
But then the volatility of USD is not really seen because it is the currency that is used to measure any other currency, it is like the basis on how we look to other currency. If we see the value of bitcoin without even a comparison to fiat, usd to be specific, then we can see bitcoin just like how we look to USD.
No, the US dollar is not too volatile as if you look at other currencies you will find it more volatile as compared to US dollar. Bitcoin though a digital currency is the most volatile currency as we noticed and have been noticing. Volatility in any currency can be reduced if liquidity increases that is the increase of market participants for that currency.
US dollar investment is also of great importance as it is the need of many countries in order to strengthen their economy but the modern world is looking for crypto especially for the Bitcoin.