Having also owned, among others, a VW GTi, Acura CL, and a Cadillac Fleetwood, and, now a Lexus RX, it is certainly a very fine vehicle. But, echoing other peoples comments, the contrast between driving several different vehicles allows one to view them with perspective. All of the cars were right for me at the time I owned them. I'm not sure the RX would of been right for me in my mid twenties but in my mid 40s it feels right.
And you can get tired of a car over time. After about four or five years I generally find I've had enough and it's time to look at the market again. I really loved the Cadillac but found it damned hard to park in small area parking slots. So rather than make a 10 year commitment, make say a 4 year committment and ask yourself is it still right for you?