Yoshiyahu,
Why are you worried about this? I used to study Wing Chun and the school I went to closed. I tried BJJ and I liked it so I stuck with it. No big deal, I still work some of my Wing Chun on my own because I enjoy it and I consider myself a hobbyist BJJ player who likes learning new stuff and getting a chance to roll once or twice a week.
Unless you are training to be a fighter, which most people aren't, do your art, enjoy your self and realize it gives you an advantage that you wouldn't have had if you didn't train.
If you don't want to get in fights one of the best rules is to avoid places with large amounts alcohol and testosterone.
Is not a contest about who has the best MA, its about what your MA gives to you and whether or not you are happy with how you train.
Go now grasshopper, the sun is warm, the sky is blue and there is still much chi sao to be played.