Making Allowances for Baby, Or Unrealistic Expectations?

During our recent acquaintance with the 9 month sleep regression, we were very careful that when Isabelle was asleep in the evenings, we were nice and quiet to ensure she wasn't woken. We were much more careful than normal, closing the living room door, and generally treading nice and quietly as we moved around the house.
Simon said to me as we climbed in to bed, victorious in her silence, "I never thought we'd be the sort of parents who creep around the house so we don't wake the baby".
In part, I agree with him. We can't change our whole lifestyle just because Isabelle is asleep. We can't sit in silence all night,  not flush the toilet, tell people never to phone or knock the door, and never turn the hall light on. Those things are part of everyday life and, luckily, she has never had an issue sleeping through them as they are simply things that have to be dealt with.
But, then I thought a little more. If Simon were to go to bed early, I would make allowances for him. I would turn the TV down, and move quietly in the bedroom when I went up to bed. I wouldn't turn on a light that would wake him, or talk loudly nearby. So, does Isabelle not deserve the same respect? Why should we expect her to sleep through things we wouldn't? Just because she's a baby and we think she should?
Then, that made me think even more - you can see my mind is a dangerous business! Do we have unrealistic expectations of what a baby should do? So, should we make some allowances for them because our expectations are skewed? For example, I do not go to bed and sleep all night without waking- I never have done. So why would I expect Isabelle to do that? Sometimes during the night I wake up thirsty and need a drink - so why wouldn't Isabelle? There are some days I am grumpy for no real reason...so why do I think Isabelle should be in a good mood unless she's hungry/tired? Can't she just be in a bad mood for no reason?
Maybe we have unrealistic expectations of our little people. Maybe we expect them to be the perfect baby, but are we the perfect adult? So, maybe we should be making some allowances where our little people are concerned - remembering that they are only human, and although are only little, they deserve all the respect we show to one another as adults.
PS - Izzy's beautiful name sign was made by Handmade by Her - a lovely mommy with bucket loads of talent, and two gorgeous babies to boot!