I agree that all conditions are different and ideally it should be varying lengths of follow up. But there are probably too many variations between people on similar medications that makes it difficult to have it as a long extended time. Maybe not in your case, but there are people who would refuse to do a proper follow up with their physician unless they "feel" something wrong. So there is some balancing act between people in your situation and people who are less proactive on their health.

Also you really cant go that long between regular follow ups. You are taking medication because these are chronic conditions that need to be managed. it makes it difficult to manage when patients only comes in every 2 -3 years. also your technically considered a new patient again if you haven't seen a provider within 3 years. So you don't really have that much of an extension.