The extra points stopped being gimmes when they moved it back to being a 33 yard field goal. It used to be a 20 yard field goal and automatic. Nowadays I'd think seriously about going for two more often because you should have a play in your playbook that can score from 2 yards out. As for missing more regular field goals I'm not sure what's going on there but it's no longer automatic and the kicking game is so important in the NFL contrary to what people think about Field Goals.