Good for you not having kids, nothing wrong in that. However, you cannot just sit there on your side without understanding a parent's side of things.
Just because kids go to school, it doesn't mean they aren't accounted for by parents. Even when kids go to school they have to be accounted for by a parent before, during and after school. A lot of parents work and the schools closing means a whole lot of headaches for parents that work during the day.
Parents now have to find an alternative for their kids to be handled during work hours. They may now have to pay for a care facility of some capacity that wasn't in their budget before (child care is out right f'ing expensive....overly expensive in many states, actually) or parents have to stop working or try to adjust their work schedule to stay at home with the kids. This means adjusted income or complete loss of income because they have no other options.
Parents now have to be the school teacher and parent at the same time when it comes to distance learning, while still doing their normal daily jobs. My wife takes on most of this role for our family. She's lucky her boss allows her to bring our kids to her work where they can do their distance learning, not a lot of places allow this. However, she now has to constantly help the kids with school work because the resources (active teacher in the class room) is no longer available through distance learning because of limited time the teacher has with the class and do her job at the same time.
My wife and I are dealing with things. It has thrown a wrench into life, but we've been able to adjust pretty easily compared to a lot of other families. We both still work, the wife can have the kids go to her work and do their distance learning so we don't have to find a third party to care for the kids during the day (which would cost a **** ton of money in our state - our two kids when toddler age and pre-school age were in full time daycare, it cost us nearly $24K a year and this was 6 years ago, so I'm guessing the costs have only gone up).
Not everyone with kids is the same predicament, but a lot of parents have been bending over backwards to accommodate their kids now and try to balance their work life. Or parents have had to give up their work to take care of their kids.
If you did have kids and now a school system dumps them back to you, all while expecting you to maintain your job and teach your kids at the same time, you'd have a different outlook on it. Luckily for you, you don't have kids and you can maintain your way of life, but you shouldn't be so quick to judge those that do have kids.
People choose not to understand this, my sister again as an example had to quit her job, this caused them to loose their house and destroyed their credit, it's now an eviction, and ontop of that they've been slowly selling off stuff to pay for food and bills at the **** hole they could afford since covid also got my brother in laws work hours cut. There is no excuse to not have schools open, the only danger is to the children not getting a good education and having a safe place to be during the day.