Medicine kills people. I never saw someone die from marriage

"Marital discord was significantly and positively associated with suicidal ideation and suicide attempt, and these associations remained significant when controlling for demographics and 12-month prevalence of mood, anxiety, and substance use disorders" [0].

[0] https://onlinelibrary.wiley.com/doi/abs/10.1111/sltb.12157

I'm sure lots of people have committed suicide because they were stuck in bad marriages (esp. before divorce was legalized).

Lots of women get murdered by their husbands (and sometimes the reverse).