Last week, we had to take one of our kitties to the vet. It doesn't matter what the visit is for; it could be for a routine checkup or a round of vaccinations, and I'd still worry to no end. We've been fortunate enough that we haven't had to take our cats to the vet very often, and they're all typically in fair health. But, I think it's more the possibility that something could be wrong. It's the chance that the veterinarian will discover a health issue, or that something will go wrong during the visit.