Actually there is such a thing as it can't get worse. I think what you meant to say was not to say it can not BE worse.
It can always be worse.
It can't always get worse.
When you are dead it can't get any worse(or better). At least, not for the dead person....(depending on belief structure i suppose)
A - Best ?
C - Passed ?
F - Worst ?
Im legitly curious,lol.
As for it can't get worse,i guess you are right,but in our context since nobody dies,yes it can always get worse.
Say what you feel,it's not being rude.It's being real.