If I can, I'll do minimum 80 on the highway. I battle left lane jackasses every single day on the way to work. It pisses me off most on the tollway when people sit in that lane doing 70mph. I don't pay the toll so someone else can decide how fast everyone else is going to go in the fast lane. I blew my horn yesterday at some lady in her Lexus doing 70 in it when she wouldn't move over.
I tailgate when necessary, but I apply gradual pressure as opposed to getting right on their ass immediately. Don't hate me, just move over a lane if you're not going to do 80 when you have no one in front of you.