Yes. I am still missing my sweet little "3yo who needed her mommy" and the fun times we had with her when she was little but growing up and spreading their wings is what you want for them. My only is in OR this summer spreading her wings and learning to fly. I miss her terribly and my DH was almost physically sick about it, but we're turning her over to a Higher Power and hoping this will be a growing and good experience for all of us.
I think the question, "Are you glad your kids are grown?" is a tough question to answer, really. There's so much more to it.
I remember when my exBIL was leaving my sister and he made mention that she was a terrible mother and had said to him, "I can't wait until it is just you and I again." This was when the oldest was ready to graduate from college the youngest was 13, so they were closing in.
He *thought* that was just a terrible thing for her to say. Really??? I think it is quite common. You'll miss them but the next stage of life is exciting too.
Of course, now he has very little to do with those same kids that he got upset about. *rolls eyes* But, he has a new one--his GF is 19.