The Constitution didn't envision women having equal rights either. Should they be excluded now as well?
Women, in point of fact, unfortunatley, do NOT have equal rights- any more than gay people do. The Equal Rights Amendment (ERA) failed by one vote, was never passed, and was a significant victory for Phillis Schlafly in 1982.
Answers.com note that "Schlafly argued that ratification of the ERA would lead to compulsory military service for all mothers, unisex toilets in public places, automatic fifty percent financial responsibility for all wives, and homosexual marriages."
There is a substantial article on Schlafy in last weekend's Magazine at the NYTimes.com