When you're a single mom at your kids' sports events

Is there anything that can break your faith in marriage more than having to deal with men and the way they behave when their wives aren't around? It is absolutely disgusting. They appear to be loyal husbands when together, but when the wife is away they come to complain about their dead bedrooms. One scrote brought me a huge bag of avocados because he overheard me telling another mom that the market nearby never has good ones. He then launched into a bunch of complaints about his wife. At this moment, my ex-husband arrived and took his place nearby. I replied to the scrote: "Your wife is very beautiful and charming. You're lucky to have her. And even if she wasn't, co-parenting is a special kind of hell that I would not recommend to anyone."

Side rant: I am so freaking angry I have to see my ex at these events. He has professionally supervised visitation, but because my attorney didn't specifically address what is to happen at children's sports events, I am legally required to invite him to them. It makes no freaking sense. He arrives out of his mind on meth, and I'm so embarrassed of the man he's become.