My children are in 1st and 3rd grade this year. Other than crying like a baby when I first took daughter #1 to daycare at age 7 weeks (cripes, you'd have thought I was giving her up for adoption, the way I cried, but which only lasted until I realized I was free of baby-care activities for the next nine hours), I have not mourned a milestone. My friends have reported all kinds of trauma about their babies growing up, but I celebrate every moment of independence. Not to say I don't have my nostalgic moments where I realize another level of maturity is underway...and I'm sure I will feel it deeply when my company is rejected and kisses goodnight are no longer required - don't even get me started on how grateful I am that my almost-9 year old still lets me hold her hand... but, just today, the little one was missing a game for her DS and without even asking me, or hollering about how it it was lost, she stopped to think, and went to fetch it from her jacket pocket. Awesome!
Some people I know dread the days of the empty nest - not knowing how their life will go on without the kids around every day, or what will frame their days without the kids' schedules to accommodate. I know it will come with a certain amount of sadness, but I have no doubt I'll feel much the same as I did last year when I put both kids on the school bus for the first time - "have fun! be good! see you soon! love you!" and then walked home with a little skip in my step.