Public schools vs centers

I truly do not mean this to come off the wrong way, but why do most people in ece work anywhere but public schools? I am very grateful to teach in a well paid state, but regardless of this it seems that public school positions whether its as a teacher or aide will always pay more than a childcare center will, so I wonder why doesnt everyone try to work there? The work in ece is so demanding emotional and underpaid, and it seems moreso in centers where the pay is awful and its more corporate. I also understand its probably more complex than that though