The difference of bitcoin and real money, physically bitcoin is virtual currency. It doesnt exist in the kind of physical form that the currency & coin were used to exist in. Bitcoin is something that people likes because you hold it by yourself and have better security some people also says that for you to escape from the bank. And lastly bitcoin has no value, only exchange value.
I can agree with most of your points.
However, bitcoin have value, because you can buy different staff online and offline directly with bitcoin funds, you don't need to exchange bitcoin in some other currency.
We already have bitcoin debit cards, bitcoin ATM etc.
So, you can do many things with bitcoin, the same as with your local currency.
Of course, for merchants situation is different. They can't deposit bitcoin in the bank or pay taxes.