It's nice to do things right isn't it? I always get a smile on my face when I read the exact number I am looking for. Not that one or two degrees or gravity points means the end of the world, but it's nice to be on point!
I agree being a few points or degrees off is not a big deal in my book and from the good reviews about past batches, it doesn't make bad beer most of the time. But, it does make me feel good knowing that I can occasionally do this right.