Hookup question

HI all, I have been looking to hookup for quite some time with cd or ts women on craiglist, and other sites. Seeing as it is a hookup I always ask for stats (I like them big down below - just a preference) and I ask for size and other things. 99 percent of the time I get one line responses, no pictures at all, or not anything I've asked for.Why do you think this is? Also it always wierds me out when someone doesn't even provide any information at all. Do people really just hook up based on 3 words no pics and nothing else?