Heck, we've had the MDX as long as my Youngest can remember. He was only 9 months old when we moved from San Diego to the DC area and bought it when we arrived here. Our Eldest was only 4 years old, so he vaguely remembers the car we had in San Diego, but not much.
My wife and I have developed a pattern of alternating upgrading our cars over the years. We have orchestrated it so that we have one car that's paid-off and one car with a monthly loan payment. Each time we pay one off, we shop around to upgrade the other one. This time it was my wife's turn to upgrade. We still loved our MDX, but we just had the 75,000 mile service done and it is going to need some work in the not too distant future, so we decided it was time to upgrade again.
Farewell trusty steed, you have served us well.
(sniff, sniff - dabs at corner of eye)
Adventures in car salesman psychology tactics.