I used to feel that a vote for Nader was a waste and that it cost Al Gore the election, but after a lot of soul searching - I realize that was a mistake. It is horseshit to think that anyone other than Al Gore lost the election. He took way too long to find "his voice" and he played it too safe. Perhaps if we had more voices speaking up and running for office, candidates would really say and do meaningful things. Instead we have a choice between Coke and Pepsi, and both will give you gas.
I happen to think that Ralph Nader would be an AWFUL choice for president. A vote for Ralph Nader simply because he is a third choice is about as meaningful as voting for Hillary because she is a woman or Barack because he is black. There are other reasons to choose a president, and Nader is a one-trick pony who should not hold public office.