I am struggling to understand how Bitcoin is going to be used.
I know its long standing coin, gold like qualities, not hackable etc.  But when it comes to how it can be used, I could not find any answer.  High transaction fee, limited coins cause deflation, too volatile etc.  General public, corporations cannot use it.  Gold is different, there is nothing like gold but we have better coins than this. 

Will this be used for only speculation, betting?  How would general public / institutions use it in future?