My take is this. If you have to get back to work, like really have to or your family is going to starve, well you have to do what you have to do. The public will not safe guard enough to be even a small percentage safe in returning to work. People will get complacent after about a week. Grandma is going to catch it. Children do get sick from it, they are just less susceptible to the worst of what is can do. I haven't seen any evidence that children cannot pass this thing on at the same rate as anyone else. I would be interested in seeing where you pulled that from. Sounds a lot like when people were suggesting that black people cannot get it. If you are human, and haven't had it before, you can contract it. Simple as that.
So people go back to work, the numbers start rising exponentially again, and we have to shut it down again. We shut the entire state down when we had 1 known case. Now we have 1000s. Seems to me people have a very short memory and just feel like it is cool to go out and about. Science truth is going to smack them in the face. Regardless of age or whatever safeguards you take. Exposed long enough, and you will catch it.