This is just not fair
. Any word in common usage in the English language is available to be used in the right context. There could be many common words, as others have said, that out of context or added to scan are superfluous. I have two 'JUST' songs.' Just a man' and 'just one more', and for me the usage is justified. In just a man I used it to show that we are fallible and that we are not machines or beings who always make the right decisions or do the right things. In just one more, it's a drunk always saying his next drink is 'just one more' which I also think adds value to the song. So there, completely justified
Cheers
Jamie