There are plenty of reasons to break a marriage besides cheating and drug abuse. The number one reason is because you want to. If you really want a divorce despite the public embarrassment and stigma that accompany it, not to mention the stigma on your kids as regards to shidduchim, you probably have a good reason. If you and your spouse after some time do not have a good relationship, you need a solution.
Of course in all situations you should try to work on the marriage first. You should certainly employ marriage counseling as well as counseling for each of you. But in the end, staying in a bad marriage is a crime to yourself and your kids.
Yell at me