Why be good?

[Jenny A]

Jenny-

If morality is purely a social construct, would you have a problem with a society that requires that widows be burned on their dead husband's funeral pyres like the Hindus required? Would you object to Muslim society in which little girls are subjected to genital mutilation?

These practices were/are agreed to by the majority if not unanimity of these cultures. Who are we to impose our values on them?

You forget that I live in and have been educated in a particular society and largely share that societies morality.  So yes I have strong objections to both genital mutilation and burning widows on funeral pyres.  But the people who live in those countries might not, yet they consider themselves to be moral.  Obviously the standard is subjective.

However, a subjective standard does not mean one can't argue that one set of morals is better than another.  It's just the the appeal can't be made to a higher authority such as god.  By the way, you do realize that both of these objectionable practices are at their roots religious practices.