The real social problem with any quick opening knife is the act of showing off opening it.It's not unlike the many tricks you can perform with a Colt SAA or a martial artist getting into an exaggerated fighing stance.
By the time you've twirled your Colt, flipped the filipino butterfly or braced yourself the other person has either already shot,stabbed or drop kicked you between the goal posts.
It's a nice feature for emergency one handed opening. Otherwise, I save the mechanism undue wear and let the italian hard sausage and cheese sweat a few more minutes like Richard Widmark did in his first movies.