Does this just happen to all moms

Me
Yesterday we went to baby store. I never really noticed till yesterday but I swear it seemed like every mom was mad or irritated. My LO is almost 10 weeks old and I'm wondering if I am just in a honeymoon phase and this wears off after a while... I don't feel exasperated while I'm out with her if anything its the opposite. I like to make silly faces, talk to or quietly sing to her while she's in stroller and I worry that the enjoyment of that will fade. I'm going to try not to but for seasoned mom's out there, does it really fade and if so how long after birth?