My third ex-husband, before he was an ex, about had a coronary when one of my cats got VERY sick and I spent $900.00 on vet bills to make him all better. To him, cats were "throwaway" pets. (And it was MY money, not his, anyway - I pulled my retirement funds out when we got married, to pay off some of HIS bills, and there was money left... )
Now and again, I smile, thinking about the money I spend on housing my chickens, or on the treats, or the ... anything to do with them. It's just money. I won't always have it to spend but neither will I be able to take it with me. When a cat rests across your shoulders and purrs, or a dog snuggles in your lap and thumps his tail, a duck waddles across the lawn gabbling happily to see you, or a chicken hops up onto your knee to look in your face and say, "Birk?" - how can you put a price on those things?
Chicks cost all of $2.50, or maybe $2.65, or a duckling $6.25, but that doesn't mean they're CHEAP. Hah!