Real estate agent or surrogate parent? You tell me!

Is it odd that I often feel sad at the end of an escrow? Yes, there are some clients that you never want to hear from again, the ones that were so unpleasant to work with that you'd like to change your cell phone # and e-mail address so that they can't find you after the escrow closes. But I'm talking about the buyers and sellers that you become friends with, the ones you go to bat for, that really trust you and have 100% confidence in your abilities to guide them through the often stressful process of buying or selling a home, the ones that actually listen to you! A 30 day escrow can consist of 17 days of roller coaster nerves with inspections, negotiations, etc, followed by a few quiet days if you're lucky, followed by a week or so tying up loose ends, signing loan documents, and final walkthroughs, leading up to the final realization that this has really happened for them, and this is when the excitement kicks in - it's a house and its theirs! I always meet them at the property as soon as the close is official, and I hand the keys over, and then I drive away leaving them with their new home. Oh I know, I'll be checking in with them within a day or so to see how everything is going, but there's always that feeling of sadness that I'm no longer needed! Does anyone else feel this way?!