I was born in the '50's, and can't remember exactly when I first started reading mickey Spillane books, I just know that I had never read anything as fast-paced, exciting and hard-boiled. Looking through the list of Titles, I have read a lot of them ! obviously all the ones I could get my hands on at the time.
I remember at School we had an unofficial Library among us guys, and we would lend each other "good" books, by "good", we meant raunchy, violent and thrilling. Another writer about the time, doing similar stuff, was Hank Jansen. A British writer, the Titles of his books were more Racy than the content !
One book that one guy sold me at School, rather than lend it to me, was a copy of John Clelands "Memoirs of a Woman of Pleasure" also known as "Fanny Hill". This was mired in a Court case at the time, early 1960's, and this enterprising lad had bought several hundred copies direct from the Publisher, and charged a sixpence mark up on the official price, I suspect he had got a discount on the job lot too, but good luck to him ! It sort of became unavailable to the Public for a while, but got published again within short order, but for a while , the joy of owning a Banned Book was great, and it was my first experience of Erotic Literature.
I have read fast paced Thrillers all my life, and I think all the Authors subsequent to Mickey Spillane, writing similar stuff, owe him a debt of gratitude.