How bad is domestic violence in a relationship?

This title is crazy but bear with me. I grew up in a household watching my mother be physically abused by my father. My earliest memories of seeing physical abuse was 3 years old. Growing up, the abuse was always minimized and almost treated like something normal. My father would say things like “every family fights” or “every family has problems”. Hearing things like this from my parents made it sound to younger me like all families fight like this or have explosive blowups, so as a child I couldn’t really understand the magnitude of domestic violence. I thought my life was normal even if it didn’t all fully sit right with my spirit. As I got older, I started to realize how not okay domestic violence is. Everyday, more and more I realize how abnormal my childhood was. My parents always portrayed my life as normal and so I thought my life was like everyone else’s and I’m now starting to see that that’s not the case. With this, I still struggle to grasp the severity of domestic violence. Because it was so normalized, I can’t really grasp how bad it was. It doesn’t help that my extended family also treats it with a lack of care. People in my extended family still treat my father the same even with knowledge of his behavior. They don’t really take the matter seriously or like something that is a danger. My father doesn’t receive any repercussions on his behavior and he is still respected by people in the family.

When I see cases of domestic violence in things like celebrity or sports news, I can understand that it’s bad but I’m somewhat desensitized to it. I can watch a video of domestic violence and it not evoke an emotional reaction out of me. I’m just kind of neutral.

So my question is, as a “normal” person, how bad is domestic violence, especially domestic violence in a family home? How severe of an issue would you consider domestic violence to be?

If you rate the severity of domestic violence out of 10, what would it be?