You make the best decision you can based on huge knowledge of the animal.
Vets need to be firmly put back in their boxes sometimes. Perhaps reminding them that their opinion of the animal's health is from an exceedingly narrow perspective is necessary. But when you have decided it is grubby to question your decision.
I feel very fortunate with our current vet practice.
I totally agree, we recently bought a isds registered collie pup, booked him in for his jabs and it came with a free first wormer.
Vet jabbed the puppy and did a health check listened to heart etc everything fine. I mentioned to the vet that we had sheep and enquired about tape worm don't worry i was told shouldn't be a problem till he is 6 months old.
OK I thought, took pup back for 2nd jab 2 weeks later, to be told pup had a heart murmur, first words out the vets mouth (different vet, same practice) was is he insured ? no i replied well it will cost £275 for a ultrasound.
I asked if like children ( i work for the ambulance service) might he not grow out of it, begrudgingly he replied yes, so I agreed to have him checked before having him neutered.
Finding he wasn't getting any money out of me he turned his attention to worms, He's not been wormed for tapeworm he stated, I told him what the other vet had said, but he might eat one of your sheep's carcasses he replied ( i kid you not ).
Very true I replied but as we only have 5 sheep i would like to think i would notice if one was missing. Again he went on about eating carcasses, obviously not getting the point the first time. So i held up my hand and said we still only have 5 sheep and I can count that high, so i would notice if one was missing!
Blooming cheek needless to say I am changing vets.