While not getting vaccinated doesn't seem to serve any valid purpose - assuming loss of time, or v. small risk of adverse reactions are not big obstacles - then it has only benefits, both for you and others.
To sum up: closing swimming pools for <12 will save some lives and will cause loss of life (b/c poorer quality of life) - in the end it's a political decision based on what science can provide at the moment in terms of data. The vaccinating gain/loss equation is obvious.
Well the "doesn't seem" is crux of the matter, isn't it? For whatever reason for those who don't want the vaccine, the vaccine does take something real away from them. Something they value more than the statistical benefit of getting jabbed. They might not be able to elucidate it well, but it's very real for them.
As to your italized "because of the vaccinated" your kids are at risk (irregardless the small risk): that's really no different than me having to walk in a city surrounded by texting motorists. The difference being that texting kills far more people and yet, despite laws to the contrary, nothing is done about it.
Seriously, let's mandate locking up phones that are moving more than 5mph. It'll save far more <12 year old lives than vaccinating everyone.