My opinion is that a little sparring (even with restrictions) would wake a few people up and make them better prepared to deal a real physical confrontation.
That way thay get to experience/learn both sides.
It's a bit like your boxing (but different), you get to understand if your punch has any effect on your opponent and just how strong or weak people are.
If you try to throw someone much stronger or quicker, who is resisting, you'll quickly find out if your technique works and what technique works for you.
It only makes sense to me. But let's not brawl.