Apologies if this has been said already.
It isn’t just about the children. It’s also about staff. My school, a small rural school, lost eight members of staff in the last week before schools shut, due ruling health issues etc - they were all isolating at home. There were 5 of us to look after children from nursery to Year 6, including breakfast clubs, lunchtimes and after school care, and also cook the school dinners. There was not much learning taking place because we didn’t have the adults to do it. Instead we did fun, creative stuff and concentrated on keeping the kids we had in school safe.
People who are saying the children need an education, well, that will only happen if staffing levels are suitable. If there is still a significant risk but schools still open there will be lots of staff who can’t go, so education will be hit and miss as the classes will be too big, or of too varied in age.
We don’t physically have space to separate our children and keep them 2 m apart. That’s before you take into account that children won’t abide by it anyway. We can tell them, but as soon as someone needs help putting their coat on, or falls and needs a cut cleaning, then you will lose the 2m. (I suspect the scientists who talked about opening schools never really imagined a situation where you have to say “Come out from under the table, he’s kicking you because he doesn’t like you licking his knee”. They are considering abstract, probably adult, humans, not real children who do very strange things!) And those children will then go home and come into contact with family members.
And if they are mixing and playing at school, why not the park, or sports clubs etc? If you want social distancing, schools shouldn’t open. At the point at which we no longer need social distancing, open them. My own children will then be back.
But don’t worry about missed education if none of the children are in. No-one is missing anything and exams etc will have to be adapted to accommodate that. Its not like one child being off whole everybody else learns. If nothing is taking place then teaching when we do go back will have to adapt to deal with that.