my boyfriend is a tease

we been together for 3 years now. he always says stuff about his friends having kids and they aren't even married yet or how do they have kids when they only been together for 5 months only and he always says he loves kindergarten kids because they are the cutest and so tiny(he's a teacher ). but yet tells me we aren't ready for one or that he wants one at his own time and when he's settled .what the hell does that even mean ??? he talks about kids but yet he's not ready for one? i don't get it ...he loves children so much . we always do the pull out method ( never gotten pregnant ) so why not just have a baby with me? since we are good terms and good financiallly. i don't get men . they are such a tease