There wasn't enough of it.
Spider-Man 1:
-discovery of wall crawling powers
-crawled on wall during Unity Day festival
-suspended himself on ceiling
-suspended himself under balcony
-crawled on wall chasing after Uncle Ben's Killer
Spider-Man 2:
-crawled on wall during Doc Ock accident
-crawl on side and top of moving train
-stuck on wall during bank fight
-crawled wall saving Aunt May
-suspended himself in open window
-stood on the tip of a tower confronting Doc Ock
-suspended on ceiling during final battle with Dock Ock
Spider-Man 3:
-stuck to falling debris during Harry fight
-suspended himself one-handed during Spider-Man Appreciation day
-stood horizontally on wall when he first wore black suit
-crawled on wall when he discovered Sand Man
that's all I can think of at the moment, but the amount of wall crawling was adequate
