Can't fix everyone

If I sit down with a transphobe and probe into their psychology I promise you that I will find either breath-taking ignorance or some form of trauma. 

There isn't the slightest doubt. 

I know many well-adjusted and intelligent people, the vast majority of whom have absolutely no issue with transgender people primarily because they have their own lives to worry about. To date I have only lost one friend but that is only because he couldn't get past our relationship changing in any way and not because of prejudice against transgender people in general. 

Transphobes can only truly repair themselves by looking inside their own psyche however we know that hatred of the "other" is as old as humanity itself and hence they will always be with us. They come along every generation and develop mental health issues which invariably involve exacting revenge on others. 

At my age I am past them but I do worry that their influence on younger people will derail many of them for a time. Thankfully the tide seems to have turned and, once we get past this last gasp of the hateful, the world can move on to being a more diverse place. 

No, not all the prejudices or the hate will completely disappear, only that they will hopefully be pushed by an increasingly smaller group of people.