Yes, there are, snugs. But someone like the VP has actually progressed in his career. He's had many jobs in both elective and executive government, as well as having done work in the private sector. That's far different from someone who sits in the exact same job for nearly his entire adult life.
I mean, think about it! For 40, sometimes even 50 years, people like Ted Kennedy, Robert Byrd and others like them don't progress. They are very wealthy people who don't have to work. But they keep running for the senate well into their 70's and 80's, and occasionally into their 90's. Heck, Strom Thurmond was first elected to the senate in the 1940's and stayed there until just a few years ago. He ran one more time at the age of 94, because he wanted to be the first sitting senator to make it to the age of 100. I know he was reelected, but the whole thing is stupid. Toward the end of his last term, they were doing just about everything possible to keep him alive just so he'd make it to the end of his term. He died shortly after he retired.
Just because one can do something, doesn't mean they should.