This is an interesting thread. I have two kids (1 1/2 and 1 month) and they certainly DO have their "bad days". As a mom I have more important things to worry about that glares and mumured comments when one is throwing a fit or playing with their food. Personally, I love it. That's what being a mom is all about. Sometimes I wish I could get away with a "bad day". Haha! As for taking Bentley in with me. Yep, sure do. He knows when I pick up his bag he's going. He hops right in, lays down and takes a nap. No one ever knows he's there. The few times he's had "bad days" and barked once the people working are taken aback so much that there's a 3.5 lb dog in my bag that they usually just want to see him. He stays home sometimes so he knows he can be alone but he has gone pretty much everywhere with no problems. I think as long as they are behaved its okay. Everyone assumes his bag is a diaper bag in my case.
And he truly enjoys being in it. Just another chance to grab a quick nap for him and be out and about experiencing new things, places, and noises. <3