I wouldn't vote for it as he is too socially liberal for me, but we need people like Ventura if we are ever going to break the two party duopoly that we have.
We need less people like Ventura, who would be running for President just to satisfy is own need for constant attention.
I see your point as the same could be said for Nader. But when the media is covering elections, Nader and Ventura, or Roy Moore who also comes up as a possible third party candidate, will get a lot more attention than Badnarik, Peroutka, or Cobb.
We don't want someone running just to bring attention to themself, but I think this also applies to the Republicans and Democrats as well.