As others have said, this argument can easily be applied to kids, which are more expensive than pets. But just like kids, people have pets because of the joy they bring. To avoid that joy purely for monetary purposes would be more anti-mustachian, in my opinion. Besides, I would say it's more uncommon to have a pet cost $20,000 in operations. Similarly, you could have a kid who needs $50,000 worth of surgery that isn't covered, but you don't avoid kids just because of that what-if scenario.
The new topic isn't any better, because again you can complain "having kids is a drain on your finances." You don't see people doing that as much because kids bring happiness (to some people). Just like pets bring happiness.
Just ask any pet owner who is had no luck with health issues of their pets.
You can easily spend close to that and dont forget food supplies and doctors appointments.
p.s It was close to 20K for 2-3 dogs that he is owned, not one pet.
Alright, let's look at the costs for my own cat. I give my cat high-quality food because it helps maintain health and prevent things like diabetes down the road. It's roughly $1 a day for me to feed him. He also has a vet checkup every couple years, but let's assume it's each year just for a worst case scenario. That comes out to $365 for food and $50 for vet visits. I also buy cat litter that's $13 every two months. $13 x 6 = $78. Finally, there's heartworm + flea/tick preventatives. These cost me $50 a year because I get a good deal on them from my vet.
$365 + $50 + $78 + $50 = $543
If I have the cat for 15 years, it'll be $543 x 15 = $8,145. Because illness is more common as animals age, let's throw in some random expenses. Past the age of 10, I'll say it costs me $1,000 every year because of an illness that occurs. So $8,145 + $5,000 = $13,145. Let's also add another $1,000 for a lifetime of toys, beds, and treats, even though that number is far too high.
The grand total is $14,145, for the life of this cat that brings me happiness on a daily basis for 15 years. That's a hell of a lot less than many people spend on their cars, for a living creature that actively brings me joy. That's a pretty sweet deal, if you ask me. If you want to get more extreme, throw another $4,000 in there for a major medical event. $18,145 total. I still think that's a sweet deal for 15 years of kitty. Some people may disagree, but I'm an animal lover and they make my days brighter. So no, I don't think $18,000 (a pretty worst case scenario number) is anti-mustachian for 15 years of happiness with an animal I love.
Basically, apply this same logic to any number of hobbies that people here have, like traveling. Should people stop traveling altogether? Golfing? It's all about what makes your life better, and it's all relative.