Dont dress it up as concern for others , frankly I would have more respect for you if you just admitted you were selfish. Yes of course it's awful for you and every other key worker having to do this. I'm unbelievably and intensely grateful to every single frontline worker , NHS to supermarkets to everything else.
We are all scared at differing degrees. Key workers are scared of catching the virus, those who have lost their jobs are scared of making the rent payment next month , people who have lost every penny because of business closure are scared they wont be able to put food on the table soon, older people are scared of getting basic supplies in shops because of panic buyers. It sucks, all of this does. Noone comes out easy. However the majority , thankfully and I hope, are recognising it is what it is. At least the others mostly are admitting that they are selfish.
Take a breath , stand back, yes it does suck, yes I can completely understand the fear. However everyone is struggling at the moment , take ownership and admit your fear, admit you are being unreasonable. It's awful and I am sorry you are scared, really. However you are being selfish, NHS workers are literally 0utting their lives on the line, they aren't as a rule winging that they are doing the "right" thing by arguing these issues. They are front and centre, the least we can do is to make sure they know their children are safe and cared for while they risk themselves.
Remember people have long memories and after this settles down people will remember your actions and your words. You get to choose now whether you are of the " we all stand together and fight together " group, or the " I'm not stepping up and I'm opting out " group. Fear makes people do things they wouldn't usually and maybe ot is unfair, but it is true, be careful what you have to face at the end of this.
Ultimately it comes down to all of our thoughts, selfish though they may be, if I get unlucky , if I get really ill, we had all better hope that we did the right thing now so there are medical professionals to treat us when the chips are down. Because if they are at home because they dont have childcare?? Think carefully about what that means.