I am looking for a reasoned discussion of topfree equality. This is not a personal attack on anybody, but to be a discussion of the dominant culture here in North America.  Here's an outline of my thinking

1) Discrimination against women is sexist.

2) A cultural norm that increases physical suffering of women and prohibits joyful experiences of women is discrimination against women.

3) Rejecting topfree equality increases the physical suffering of women and prohibits a joyful natural experience of sun and wind on one's body.  It also perpetuates the view of women's breasts as sex objects.

4) Viewing women's breasts as sex objects is sexist.

5) Sexism is wrong.

Conclusion: The cultural norm against topfree equality is wrong.

Others disagree with my conclusion. All I have heard is that topfreedom is against the cultural norm.  Please help me understand why this norm is not wrong..