Best answer for me,
No marriage,No divorce.
But for real tho I think everyone has their own reason for having one,
And for me I think it is better specially if the relationship is being toxic it is best for both of you to separate from each other.
We could never know why they are going through it but we should also know that before they finalize it they have given time and too much thoughts about,
So we should just respect their decision.