I pretty much agree, but as I've pointed out a few times, the problem for people in those times (and in many cultures to this day) is not the shame that nudity might cause to the naked person, but the moral pollution caused by seeing one. That's the reason for the rules in Islam, Orthodox Judaism, etc. etc. concerning female dress - it's the fear of the sinful thoughts and feelings the sight of (especially) female bodies arouses in males, and the danger that presents to their souls. The sight of a wholly naked person, especially though not only female, would of course be much more dangerous. Such 'gymnophobia' was and is very deep-rooted in middle eastern and south Asian cultures, and spread to the Western Empire as the Eastern became increasingly dominant in wealth, trade and population. Christianity was a vector, but there were many other factors.