That's sad Markha.
Yes, I have lost a number of friends in plane crashes, including two who I had to help lift out of the wrecks. I would rather do the difficult thing, and help to give my friend a final lift, than to think that I did not give them that last effort of caring.
Then it was my turn. My friends lifted me out of a crash, my family was called to the hospital to say goodby, and then I lived.
My advice is to get involved, and do something which is in the memory of your friends. Then remember that everyone else is still going to go flying again, so seeming to discourage it is unhelpful. If you're less keen on aviation, so be it, but there are many pilots who will consider the accident, then move on, and fly more.