You are so exactly right. A vote for Ralph Nadar was as big a waste as a vote for Ross Perot. Exactly what did either man accomplish? I'll give you a hint - absolutely nothing.
For God's sake, why don't you do a little reading instead of blathering on this post? When has a third party candidate ever had a snowball's chance in this country? I'll give you another hint never. If Johnson did get 10% of the vote - What exactly would that accomplish? You got it - nothing.