There's a really unique relationship between a single parent and their child. Marriages so easily break up. There's kind of this temporary deal about marriages. That's one of the things that makes it stressful and that's something that's nonexistent in a parent-child relationship.
Class action lawsuits are an important part of our legal system. All citizens should have the right to band together and settle grievances with bigger companies but that system is broken and it needs fixing.