Why exactly is divorce construed as a bad thing?

Because of the idea that people are letting their marriage fail. They are giving up on their partnership. I can agree this does sometimes happen, the work that the commitment takes is more than they prepared for. The reality can often be different than a dream. BUT I don’t think people should stay together just because of others opinions, they have kids, they rely on their spouse financially. Leaving marriage is expensive both in money and emotional energy. I don’t think divorce is often the first thought for any married couple. But sadly many do find themselves realizing they are unhappy together. I support people’s happiness when it is safe & wont cause serious harm to others. People can work through much in a marriages hard times but divorce can be the healthiest option for some. Each situation has different elements.