There are many times I get back from a 2 hour plus ride and sit for an hour or so waiting for my wife to get off work so we can go walking together. Showers just get the stink off me.
Even yesterday on one of the muggiest hottest days we've had so far, I waited after my ride for over an hour on my wife, only to have the walk canceled because she wanted to do something else that I needed to smell clean for.
So if you are having to take a shower to really solve some physical issue to make you feel better about your ride, then again, you might be doing something wrong or you are over reaching for your current level of fitness. Which will resolve itself eventually if you keep at it. Assuming you don't die from it.... <grin>