I think of the utilities bill, and I can go on my day with just one nightly shower and tahan all kinds of aspersions cast on me. It is worthwhile. Plus I can wake up later. At least I don't wear my next-day work clothes to sleep, so they're all fresh.
I don't think its the shower in the morning that pose a real problem. Its the off work/school hours after a hot day. The odor of sweat and perspiration of those who had been outdoors pervades the air badly and stinks up the public tpt..