Truly "random" RI's usually pop up when an infected snake from another breeder is introduced to the collection, and whether improper quarantine was practice or it just got missed, it spreads on.
While you can usually avoid vet visits with proper husbandry, the truth is if you have a large collection you will once in a while run into problems like infected hemipenes, rat bites that get infected, etc that you simply cannot predict and can't always treat yourself. SO it's always good to at least know of a vet who can help you in the rare event you need it. (even if you are a ball python god who has perfect husbandry and cleans all his cages every other day)![]()