Oomis, i’m usually a big fan of your interesting, well written posts, but that last one makes no sense at all.
The Torah was not presented for us to analyze, rationalize and take apart as if it was a work by Shakespeare or Rembrandt, presented for our enjoyment or approval. The Torah is Divine. Sometimes Mitzvos make sense (think Tzedaka or the prohibition against speaking Lashon Hara) and sometimes, to our limited human minds, they don’t (think para aduma or ben sorer umoreh). Our job is to follow Halacha as closely as possible. A man in the presence of an unwell 90 year old woman who is not dressed properly cannot daven. The likelihood that he will feel any sort of physical attraction is just not there. The fact that this doesn’t make sense to you, or anybody else, doesn’t change anything.