I do have a traumatic past that has affected me greatly and that does probably show in my comic in the mood of my comic. I don't deal with my personal traumas in my comic but I do draw inspiration from feelings I've felt when things went bad. A lot of my characters have had terrible things happen to them and I try my best to capture the real emotions they go through because of that.
In many ways my comic is a healing tool for myself, even if it isn't about my own traumas. I wanted to write a story about characters with traumatic life events who heal and find peace. It is a story about finding one's own place in the world because it's the kind of story I needed to write.
So, I think you should write the story you want to write. You can never really predict how others will react to it but it's important to learn to do things just for you.