I regularly get accused of arguing for the sake of arguing. It’s true, I do enjoy a good heated discussion. Taking positions you wouldn’t normally adopt is the best way to keep you from falling into unconsidered positions.
Changing your stance on an issue may be considered bad in politics, but in any other arena it’s considered common sense. The quest for more information should also include the mission of making sure you don’t trick yourself into believing something is true just because it’s been that way for years. Times change and what we used to hold as self-evident becomes just another victim of modern advancements.