Well, I agree to a certain extent, Esox: you're definitely unique!
I'm extremely lucky in that I have suffered only one big flood that actually damaged a finished portion of my home at that time, as opposed to embarrassing and messy ones in unfinished basements that were really just huge inconveniences and didn't really cost me anything more than clean-up time and loss of dignity. And that one was not aquarium-related in any way, just an unfortunate combination of breakdowns and malfunctions amongst the countless pumps and gadgets that keep a rural home humming along.
If I had such a living-area disaster caused by aquariums, I suspect my matrimonial bliss would likely feel the strain just like yours would. But my wife knows about a couple of previous girlfriends who forced me to face their ultimatums long in the past...and she knows that's why they are in the past. My standard answer to those "It's the (fill-in-the-blank) or me!" confrontational demands has always been "Well, the (fill-in-the-blank) was here long before you showed up...and will still be here long after you're gone!"
It's like that country song, in which the guy is singing about his wife who is complaining about his constant fishing; she tells him if he goes one more time, she's going to leave him. The next line is something like "I'm gonna miss her...oh, looky there...I've got a bite!"