I totally get your question and I wonder the same thing. Absolutely not in a judgemental way, but just from a standpoint of what leads people to their purchase decisions. It's a fascinating questions. Heck, people are fascinating. Their thought processes are a wonderment to me, including my own!
We bright and fantastic
BMW owners can't even go 3 posts into a new thread without somebody having a different opinion than somebody else. If I started a thread asking the question, "on a sunny day, is the sky blue?, I'd get a variety of answers even though the answer is simply yes! For me, that's why these off-topic threads are so fun. It's intriguing just how different we all think about virtually everything, including what's important and making a car purchase decision.