It was feckin amazing. I don't remember #1 so well, but #4 and #2 were both great. Every time John Wick would run out of bullets and throw the gun at someone I'd chuckle. Every time someone got hit in the nuts, my 9-year-old would chuckle.
As an aside, it's been a long while since I've seen an R-rated movie in the theatres. The little Shrmdougluvrs had seen the other three John Wick movies at home so Mrs. Shrmdougluvr and I were like, "Why not?" Man were the trailers gross and intense. I was legit concerned for awhile that my 9-year-old was traumatized and we wouldnt even make it to the movie. We felt really bad about it.