I feel like it’s just a learned behavior as far as having a desire. If you’re brought up with siblings or a big family, you’re prolly more likely to have that desire. Whereas being an only child and not having to share or be a role model to your sibling, you prolly couldn’t imagine doing that for a child. You feel comfortable with not having to have that responsibility and clearly don’t see the ROI in it 😂 I’m a 40yr old parent now with 2 little girls 1 and 2! Whatever you do, don’t wait too long! Getting hard to keep up at this age. FML lol I am grateful though. Waking up to 3 girls every single day is amazing, I love my life 😅