I agree with nearly all of the Libertarian positions. Small government, low taxes, etc. There position on drugs, border security and defense are unworkable. I once heard a Libertarian proclaim that the Federal Roads were unconstitutional.
The biggest reason is they will be no different than the current crop of tax and spenders that inhabit both parties. The act of one Libertarian jerk has soured me forever. Steve Osburn who lost the Senatorial election for Indiana to Richard Lugar has asked for a recount. Of course this recount will be at taxpayer expense.
He lost by more than one million votes. Jackass.