Will I every learn

Why did men only want to meet for sex. I have this guy myspacing me for a over month, just asking how  i am, what i up to how was my week. he has asked several times to meet, yet he won't send an actual photo of himself. Should i meet with him or just let it pass. I'm not sure of why i have nto met up with him. Should i meet him or just disregard his invites. He seems to be a decent guy, except for the fact that his friends on myspace are all females.