serious question how do you handle cleaning your nether region without soap? i can see not using soap everywhere else except down there. And does it follow that we should stop using laundry detergent to? Tooth paste? Toilet paper?
Because your diet contains a high amount (compared to early Homo Erectus) starches and sugars I strongly recommend you continue to brush your teeth, or don't. I care not. Same goes for toilet paper. These treatment serve very acute practical issues. Soap is simply not required and in the absence of it (on a daily basis) there are no side effects.
if you are in direct contact with known deadly bacterial agents such as staph, trig, sal, anth, giardia etc use soap. As these bacterial agents are rare out side of their known sources of infection; uncooked meats, reptiles, hospitals, etc.