Honestly it sounds like your son might be a little envious here haha. Seriously though it can't be any worse then someone having a corvette at an older age and going through a mid life crisis. If anything I'd think he would congratulate you for making a pretty good choice in a vehicle. The ST packs a good punch out of the box. It has a lot of safety features and is a fun car to drive while still being practical for everyday driving and mind you it's pretty affordable to fill up. He must think it's a subi wrx/sti if he thinks it's a rally car. Your only as old as you feel and I say hell go out and enjoy your car. It's meant to drive and its your car so why does he even care what you bought and why is he so critical of your car choice anyway ?