Allowing others to merge onto our ‘highway’

A highway sign tells me to merge because my lane is ending. As soon as possible, I do.  Then, where the lane ends, I see that several drivers who were behind me before I merged are stuck. I see their blinkers, but I refuse to let them in. I merged on time. I have the right to ignore them (and in a way, punish them) for waiting until the last minute to merge. They should have merged sooner – behind me. I justify my selfish attitude by believing I’m a more righteous driver. Can you relate?