I got a Kitten, vet said No.

I posted a while back on getting advice if I should bring a kitten into our home with a FIV+ cat. With all the positive responses I decided to bite the bullet and adopt a baby. Well we just got back from the vet, vaccines and dewormer and all that good stuff. The vet basically told be it’s not a matter of if, but when he will contract FIV. Through sharing water bowls, litter boxes, food, toys, etc. I clarified that I thought it was only through blood borne contact and she said no. Not sure if she is being extra cautious or just mis-informed? Now I’m deciding if I want to keep our new baby because of the risk. I know he will have an amazing life with us, but I don’t want to make him sick.