First past the post has no virtues

If we have a democracy then we must respect the voter. The purpose of democracy is to give a voice to the people and to make sure the government is responsive to their views. So then it is consistent with democracy to respect the voter but with a first-past-the-post system the voter is not respected (unless they vote for one of the leading parties). To punish the voter for not supporting one of the main parties is to disrespect the voter which is inconsistent with democracy itself. The voters (we must assume) are innocent and good and so then there is no reason to punish them with first-past-the-post. There is no reason to punish innocent people and the voters are innocent and so then there is no reason to use fptp.