I have 2 girls. I grew up in a family with 4 brothers and 1 sister, so I didn't know how to treat girls (as boys it was always behave or get smacked). So it took me a while to get used to having girls pout and cry. But they are really cute. You will end up enjoying them as much as you would with boys. Just take your cues from your wife. Ps... I still ended up building robots with them and riding roller coasters together, so don't think you will miss out on these things!!