what was/is your tipping point on having more than 2 kids?

I'm currently pregnant w #2, due next month. and am leaning towards being two and through! LIke, seriously suggesting DH get the vasectomy later this year because we've met our OOP for the year.

I just feel like everything is made easier for a family of four! Cars, travel, etc. I'm emotionally spent as I am not a very good pregnant woman, even though I've luckily not had any major complications, etc. It's just draining in so many ways and I Don't see myself handling it again with age.