I've run into this before, if the campaign won't be fun to play don't play it. If you're a rookie DM spend a little money and buy an adventure path, most of them you can use with just the SRD which you can access at (d20srd.org). It's different being the DM but it's still fun, and it frees you and your friends from that DM's tyranny. If he seems OK with you running a game invite him to join.