A whole new world!

When I had my first baby, I honestly couldn't understand why people were always saying that their lives had changed after having kids.  My first baby went everywhere with us.  She stayed up late, or fell sleep wherever she was if she was tired.  We went out to dinner; we went on trips (spur of the moment, even!); we went to friends' houses to hang out at night, etc.  What we didn't do was let having a baby change us.  And because we were so fortunate to be able to do this, we were baffled by those of our friends or acquaintances who had to be home by a certain time, or had to wait to do something because of nap-time... it just didn't make sense.
And here comes #2!  A whole new world on so many levels.  I now understand (and empathize, and should even apologize to...) those friends and acquaintances of long ago.  I attempted to go out to dinner tonight with some friends and their kids (an attempt i haven't made much with #2.)  At exactly 6:45 (her preferred bed-time), she began to wail at the top of her lungs.  I tried to rock her or lull her to sleep (knowing full well that she was ready for bed).  But no, she will ONLY go to sleep in her own bed (or rather, in my arms in her own bedroom.)  She does this to me all day, too.  No matter how exhausted she is, she will only sleep at home. She'll catnap in the car, but we never actually go anywhere more than 10 minutes away.  As soon as the car stops and I open her door, i see eyeballs.  
She is now 4 1/2 months old and I am really beginning to think that we won't be able to 'change' her into one of us... that is to say, to fit into our flexible and spontaneous and go-with-the-flow type of lifestyle.  And i honestly don't know how we can become the be-home-by-6:45p.m.-every-night type of family.  So the compromises are going to have to begin.  Somehow we'll have to figure out a barter with the baby that will allow us some evening fun times and allow her the peace and quiet respite of home that she craves.  She may be 10 years old by the time we figure it out... but we will.  until then, we're just going to have to keep our chins up and our earplugs handy!  And we'll have to gear up our apologies to other restaurant patrons on special nights like tonight!