It’s not abnormal to want children, of course, but it’s also natural, just comparatively less common, to not want children or understand why other people do. My main concern here is that the OP’s wife isn’t listening to what he wants, for whatever reason - psychological, hormonal or physiological. Maybe asking her to give him 6 months to think about it was the only way for OP to get some breathing space from her pushing him to decide. It doesn’t necessarily mean she’s assuming he will say yes - a lot of the time, using the stalling tactic means an unspoken “no”.