I make a lot of the same beers and use a lot of the same ingredients and processes. I would take SG and FG readings with both a hydrometer and a refractometer and the numbers were always right where the software predicted based on my efficiency. If I was having trouble with something I might pay closer attention to those numbers to see what I could learn. But at some point when I saw the expected numbers over & over I stopped taking readings. The beers were coming out great. I admitted all of this on another forum and there was an inquisition-style round of questions. Some people were aghast. I know that some brewers love, love, love all pieces of the process, charting data points and comparing them, etc. but I am not one of those people. My job is rigid enough and brewing is a hobby and an expression of creativity for me and I enjoy it very much. I'm brewing today and it's going to be 60° and sunny and I will enjoy doing it the way I like. Cheers beerheads.