Is laughing wrong?

Genuine question.

So, to deal with a lot of my medical issues, I laugh and use dark humour a lot, and I mean a lot. But so many people, like a shocking number of people tell me that it’s wrong to laugh because others struggle, or that my laughing is “proof” that I’m lying because “no one who has gone through that could laugh”.

Do others use dark humour and laugh a lot to deal with our lives, mentally? Has anyone else experienced similar situations or is this another case of me being lucky enough to only have it happen to me?