I am like you, naturally clean (relatively speaking) with little body smell. My wife is jealous of that - she has much more odor in her body than me.I'm naturally a clean person (like a cat!) and I shower once every few days (if nothing of importance comes up, otherwise I will shower every day). I'm also uncircumcised and find myself in need to clean myself every few days only as well. The only real thing that causes my dick to need washing is after I cum (or if theres any sexual-related fluid on it). That stuff will make it smell bad over time if not fully rinsed away naturally.
I have to also ask... why do people feel the need to shower over 2-3 times a day? Unless you work out a lot or your job requires you to wander around all day in a landfill, why do you need to do that? Seems all you would be doing is drying your skin out and wasting water/soap.
The problem appears to be much more individual- than circumcision- related. We are not all the same, some smell more, others less. Besides other factors, I believe (but without having any valid back up data) that body mass plays a role too. Fat or just overweight people tend to produce more excretions (like sweat) and body smell. FWIW, my BMI is around 18.4 and I am near my 40's.