True! You pay for the convenience and joy. However, it does not mean that buying a car is a mistake. Road Trip experience, Saving Time and Convenience, Domain of the things you can potentially do etc. can make a car worth it.I wasn't making any comment about the S and the X. Just saying that, as an investment, a car is pretty bad, because you are guaranteed to have a negative return.
Saying that the car is worth more than you owe does not make it a good investment. The car will always be worth less than what you've paid plus what you owe.
You can say it's a good value. You can say it is a better financial deal than leasing. But if the value of the car is always decreasing, you are paying interest on your loan and you can't generate a dollar of revenue from it, a car, by definition and the laws of math, can not be a good investment.