I get confused and irritated all the time by the inconsistent behavior of the home, end, page up and page down keys. Sometimes ends takes you to the end of the

I get confused and irritated all the time by the inconsistent behavior of the home, end, page up and page down keys. Sometimes ends takes you to the end of the line, sometimes it scrolls to the bottom of the page, sometimes it does nothing. Sometimes Ctrl+right arrow is end, sometimes Cmd+right arrow and other times even fn+right arrow. It's just a huge mess. And who thought having no delete key was fine? And then they went and mislabeled backspace as delete! WTF!