Actually Lightning, that is a side benefit for those with more 'draggin' than most have 'hangin', however the sweating is a huge issue and it is only blended water, so no 130 degree water down the drain. Many folks have bidets in the bathroom now, so for obvious reasons, warm water is THE only option. If you have hard water where you live, made sure the mixing valve is accessible for cleaning or easy replacement. isolation valves......unions.....easy draining.
If any of you have had to replace the substructure of a rotted out floor in a bathroom, there would be NO bitching about warm water costs. I see every pipe in the basement insulated in many homes, but if you have a boiler running in the basement year round, that is not a problem for those folks. The cool damp basement is a magnet for additional issues like mold, so relax and load that hopper for the summer also. We didn't mention ventilation either, and air circulation or dehumidification is a huge stress reliever.
Oh, I also like the new rapid flush toilets; less water, great elimination of 'solids' and rapid refills. Look them over and consider re-placement of your older 3.5 to 5 gallon units. ALWAYS check for leaks on the rubber stoppers, flappers, etc. If you are on a septic, you could be saving years and thousands simply by keeping an eye on drips. Food coloring in the tank, let it sit, and if you see any color hours later, you know where to start the repairs..