Pet insurance exists for one scenario: the large, unpredictable vet bill - the emergency surgery, the swallowed object, the chronic illness that arrives without warning and costs thousands to treat. It reimburses a share of covered costs after a deductible, so a financial catastrophe becomes a manageable expense.
What it is not: a discount program for routine care. Checkups, vaccines and dental cleanings are predictable expenses, and paying an insurer to route predictable money through claims paperwork rarely beats just budgeting for them - which is why wellness add-ons should be judged as budgeting tools, not insurance.