I agree with what you are saying regarding " We live in a free country and each if us does what we feel is best. " I also agree there are many oils on the market that are great oils. I also agree with your desire to change your oil at whatever interval you choose, which in your case is each year, regardless of mileage.
A UOA is the very best indicator of an oils usefulness, as well as an indication of contaminants within the oil, and as indicator of normal wear patterns, abnormal wear patterns, and excessive wear patterns within the engine itself. Many large Companies use this type of procedure to determine many things, including "Drain Intervals". Personally, I have been doing this procedure on every vehicle I have owned in the past 30 years, including 4 different Dodge Diesels beginning in 1991. I have exceeded 100,000 miles and 10 years on a single oil drain, so I am very satisfied with what I have experienced over the years.
Having said this, I would NEVER EXTEND on oil drain interval, without doing an oil analysis. I also would not EXTEND oil drains without using a very good by-pass oil filtration system. I have seen large trucking Companies that have saved hundreds of thousands dollars by utilizing UOA to determine Drain intervals, as well as keeping track of how the engines are performing regarding engine wear, and contaminant levels. As far as cost for a UOA, i can get 5-6 UOA for the cost of one oil drain on a Dodge Diesel.
Best regards
Wayne: Info appreciated, though we have different philosophies.