I understand that but conservatives show up in droves to vote nationwide and liberals are being unnecessarily split on Bernie and Hillary. It's a hard sell, getting the Bernie folks (whom I support) to pick up the torch for Hillary for whatever reason. I'm definitely doing it, even though, like you said, my vote doesn't really count.
Again you are overestimating the unity of republicans and underestimating the amount of Bernie supporter who are going to vote for Hillary in the GE.