No need to feel down. It's a car. There are tens of thousands of Boxsters, Caymans and Carreras on Autotrader every day. Sometimes people get attached to their cars when the car really doesn't deserve it. It's not going to cry for you when you lose your job or your wife leaves you with the dog.
But it's definitely a stressful experience. I often wonder if my car were to get totaled during a low speed incident how badly would I get burned. The insurance company would not compensate me for all the upkeep and upgrading. It would be an instant and expensive bath, a total wash really. Which is one reason why its good to move onto another Porsche every couple of years.
The best way to deal with this is to look for a good replacement. based on one incident I had recently, a minor event where an SUV backed into me, also in a parking lot. light damage but because of the width of the SUV it touched a lot parts on my car and caused just barely enough damage to put the other guy's insurance on the hook for all new parts. The replacement cost for a new bumper, fender, hood and one headlight was nearly half the market value of the car. But unlike your incident most people who saw me afterward could barely tell I'd just had a fender bender.