Yeah, another vote for being concerned about *REAL* issues (ie carseat), and not over stuff thats irrelevant and simple opinion/preference. My boys get a bath, 1-2x a week, on average, and occasionally go much long stretches without. DS1 (3.5) simply hates baths, always has, and its really not worth the screaming and fighting to give him a bath every day. Its really not. DS2 (14 months), gets a bath when ds1 does, or occasionally with me. So, he actually gets bathed more than ds1.
And, tbh, I've gone a solid week to as much as 2 weeks between showers at various points in my life, and I'm quite happy to report that I'm *JUST FINE*. Some of those times were out backpacking/camping, some were while traveling around europe. And I frequently go 2-3, even 4 days between showers even here at home.