OP I hope you are doing okay and I'm another saying that this situation is unprecedented and bound to destabilise us.
Rightly or wrongly, over the last say 50 years, we have been encouraged and indeed educated to improve our mental health and to recognise that suppressing valid feelings without processing them can lead to poor long term outcomes not just personally but for those around you.
We have also experienced for the most part, a sense of stability and been encouraged to achieve goals like careers, home ownership, self-improvement - these things have fuelled and built the economy. All of this is at risk from something invisible and possibly life threatening. Just sucking it up is hardly realistic.
The comparisons to WW2 are somewhat irrelevant - in this case to survive this "war" we are being expected to change everything that makes us human. Puritanical self-denial has been removed from our make-up because we have lived - and been encouraged to do so - in a time of relative peace and plenty. So much of our lives and work is rooted in social interaction and we have gone from being advised to take a break from the online virtual world to embracing it totally.
In WW2 we knew exactly who the enemy was, what they were doing to us, and physical risks had much clearer solutions. Now we have a bunch of mixed messages, guidelines and the enemy is invisible but could be lurking in anyone you have contact with - this is utterly different and fear of the unknown is a powerful psychological force.
Everyone is different and it's perfectly possible to have a range of valid emotions. Some people are hardwired to be "in control" and "logical" at all times - for some it becomes a badge of honour to demonstrate this even though deep inside they may not feel it, and it makes those around wary and likely to turn inward, as they feel inadequate.
Wailing and beating one's breast is not healthy, but neither is denial of ones true feelings - talking and processing can put things in perspective. Ongoing uncertainty and the feeling of having no control in a stressful situation leads to CPTSD if not managed sympathetically.
I wish you well OP and you are not alone 