Thanks for your response. I bought the Lexus when it was 1.5 years old, and I do keep my cars until they're pretty much ready to donate to charity. Luckily, through the years, I have had models that require minimum maintenance. And, while I like a nicely styled ride, I'm not one to flaunt an expensive one.
Your points are very well-considered and well-received, helping me to come to the conclusion that there are some other cars I should look at. So ... I just test drove a 2008 BMW 135i. I think I'm being seduced again, but by a car that can give me lots more fun without being quite as expensive on the first date and not as high maintenance after.
Thanks for taking the time to share your thoughts with me. Will let you know what happens!