He sure did marry his own kind because Deanna can be told that Mira had a hard life, told that she'd been dumped on for being Eastern European, told that she yearned to have a fairy tale wedding in order to make her life better and how her insane and domineering antics come from somewhere close to generosity but still wonder why her crazy mother wants to hijack HER wedding and make it into the Look At Mira show. Any sort of custom that suggests that a wedding for a daughter is pretty much the only shot a Mira has to be publicly in charge of much should hold no weight because some airhead teenager thinks it's a great big party where she's queen of freaking everything.
I should think that this is why Mike and Dee are so poor. As Naoko Takeuchi teaches us, a narrow focus on a single event without thought of what happens next and the insouciant belief that subjects not connected to the Big Show should be firmly ignored leads to great suffering. In Deanna's case, she was so focused on finally punishing her mother that she forgot that she married a dope who was raised to be hopeless with money. In the other case I'm thinking of, the messed-up clod blew off math class because she thought it was husband repellent and was only saved from taking up residence in a packing crate by a blue-eyed freaking miracle.