Lol. Seriously? Next someone will eliminate the PhD option for the OP because you have to interact with your professors or research mentors!! Geez. By the way, where is the OP?
So, I've worked closely with vets and have a few good friends that are vets ( DVM/PhD's and large animal). Again, it does depend on your setup but I'm from an area that is highly agricultural with plenty of farms around. One vet I know who wanted to avoid small animal work, works with several of these dairy/cattle farms (maybe 4 or 5).
Firstly, an entire farm (consisting of many many animals who will be your actual patients) has maybe 1 or 2 owners that you'd be communicating with. Once your client trusts you you're pretty much the permanent doc for these guys....and they're loyal as hell. I mean you could potentially be working these same few places for years and years. You're not running into new owners and reintroducing yourself and proving yourself etc. It's actually a pretty sweet deal for the guy because he hates the neurotic side of "patients" as well.
You have to have SOME human interaction. I mean if you want to make it in any of the areas I've mentioned you need schooling...in a classroom...with other people who may also be annoying to you. Tough cookies.
I think the OP should comment at this point cause we're just debating within ourselves now.