@4everaloneoutcast The benefit of a titer rather than a vaccination is to check whether the dog needs more vaccination boosters, rather than giving a yearly vaccination when it's not needed and possibly over vaccinating a dog.
The AAHA vaccination guidelines since 2006 have said that dogs only need to get the DHPP shot every 3 years. It's protective for at least as long as that (probably longer) and after the 3rd booster (9 years in), the dog should be fine for the rest of its life.
So for DHPP and the 3 year rabies shot, I wouldn't even bother getting a titer, the dog should be fine getting them every three years. Although the dog should still be brought to the vet annually for check ups.
Dog vaccinations are a little different than human ones because of how much time and resources are put into ensuring the safety of human vaccination and protocol (how often the vaccination is given). This is because the liability of over vaccinating a human is way more than that of over vaccinating an animal, and because cat and dog lives are much shorter than a human's, and so the effects of over vaccinating are less likely to catch up to them within their lifetimes.
But think about it--other than the flu vaccine, which we need to get annually because the virus keeps changing, there's no vaccine that's recommended for humans annually. And dog vaccines don't change from year to year, they just keep giving the same booster shot over and over.