I agree, but I'm often confused by those without kids or those who say that having a kid totally changed people's lifestyles unexpectedly.

For me, having a kid has certainly been an (expected) money drain. But beyond that, my life is pretty similar to pre-kid. Wife and I still work our day jobs. Outside of work we still enjoy the same sorts of things we enjoyed before having a kid and continue to do those things. Now we just have an extra source of entertainment and responsibility in the kid as well.