No one should be able to limit expression of freedom. Provided the material is produced legally and with the consent of those involved no one, no matter how offensive it is, should be able to censor it.
The government should not permit 'morality' and 'wisdom of repugnance' to criminalize law abiding people who are not harming anyone. People who don't bother anyone are having their private lives invaded by those who with to see them punished for viewing 'obscene' material.
It would seem that there are individuals who cannot 'live and let live', finding the concept of others enjoying pornography not to their taste unacceptable, regardless of whether they are exposed to it or not.