I probably posted in this thread before, but for the original poster, really let your wife know, that you are fine with one but more than that, no, because of valuing personal time, or essentially being too selfish to want kids, which is perfectly fine. It is really important for you to be brutally honest with yourself and your spouse about this. My husband and I have 2 kids. First one I knew for sure I wanted and he was excited, the 2nd one kind of an impulse but one we both agreed on. I just assumed we would adapt for having a bigger family.
However my husband didn't want to change his lifestyle which became glaringly obvious with the 2nd one, both in how much and when he worked (only part time, and on the weekends), and not wanting to cut back on multiple hobbies which made me a solo parent in fact if not in name.
When he left he said he appreciated all the time he was given for his bands, art and hobbies, but wanted even MORE time. Obviously, had I known that he was OK saying he wanted kids but not wanting to have the commitment to actually having them, I would have made a different decision. Even if you are thinking you are being kind to say yes, it is not a kindness. He even brought up when I had brought up these things before, that he only had kids because I wanted them. Ouch.
And when I say make a different decision, most likely I would have tried to find someone who shared my values.