I stopped wearing it because people kept thinking it was mine. I didn't mind explaining to people who asked that it was my dad who was the ass-kicker - not me - but I realized that there were all those people who didn't ask and thought it was my coat.
Made me feel like a fraud even though it was just a flight jacket: I couldn't imagine wearing one of his metals.
Oh, I don't think you need to feel at all guilty for wearing your Dad's flight jacket. It just sounds like you were proud of him. But I respect your decision not to wear it for the reasons you've stated.
A good friend (Major USMC) gave me a grey sweatshirt with MARINES printed on the front. I've never been in the military. I wear it around the house, but I won't wear it in public.