According to spoilerfix.com, the writers intended the last scene to reflect the diner scene from the pilot episode.

Mom and I watched this together (as we've done every now and then these past 7 years) and we both teared up a bit, especially when Lorelai went in to check on the sleeping Rory. I think my mom remembered how it was like when I went away for the first time.

I was that Mama Kim wasn't there. She's always been one of my favorites and I had hoped that she would have been in more episodes after Lane and Zach got married.

All in all, a fitting ending, I think. Part of me wishes it was a special two hour episode, but then again, it's probably best that it wasn't because I don't think they've ever had one of those.

A lot of my favorite TV shows' series finales have sucked, and I'm glad this one didn't disappoint me.