See, not so insignificant now, eh Judy?

I don't think it's that big of a deal to be SO careful. Yes, there has to be some safety, but it's just like when you cook for humans (unless all they eat is TV dinner crap and fast food). The level of safety should be the same whether you cook for animal or human. One is not more dangerous than the other.
BTW, I've fed frozen with no problems...

The more meat you have in your house, the more you are exposed to the bacteria and pathogens and the higher your risk for contracting an illness.

As someone that knows the joys of salmonella poisoning, I will be VERY careful.

Just to put in my 2 cents worth....I switched to natural feeding ala Pitcairn about 10 years ago or so after my big male GSD bloated on that Hunden Flokken (sp?) Solid Gold kibble.......that was what got me off the kibble-train initially and I went to raw about 6 years ago. My sheltie mix was about 5 years old when I made the initial switch and she's now 16, has all her teeth but 1 that she broke trying to eat her way out of her crate one day.....her hearing is somewhat 'selective' and her eyes are still bright. My female GSD has been on raw since we got her in 2002 at 9 weeks old and she has never needed her teeth cleaned. She is a big beautiful fluff-a-dog and healthy as a horse. I'm quite sure I've made plenty of mistakes over the years but I'm also quite sure that getting them off kibble has strengthened them enough to withstand my blunders. Now if I could just muster the courage to start getting feeder mice for the cats.........
My evidence is all anecdotal and from my own experience but I just believe that if dogs can survive eating horse poop with no ill effects then whether I'm absolutely ballancing every meal is not as vital as just feeding them actual food. I remember as a kid our dogs always eating our leftovers....we never used store-bought dog food because it was considered a bit high-falutin and not necessary. As I recall they were all healthy and lived to a ripe old age, except the 2 that got hit by cars..........