My Extra Hour....

Let me just say that I do not like day light savings time. I will always want things to be put back the way they were in my childhood (meaning: clocks tell time, they don't hop back and forth all willy nilly.) All that said, I was really looking forward to the extra hour of sleep I had coming my way.
The kids were exhausted from a full day of trick or treating. They both went to bed easily. I was hoping Kayelynn would sleep all night (occasionally she does).
At 2:30, I heard Kayelynn crying and got up with her. At 2:00 I went back to bed. I wish it always worked like that. Or I did, until...
I was back up again at 2:30 with a screaming baby. Then I was feeling cheated out of my extra hour. Kayelynn did go back to sleep by 3. I put her back to bed. I stubbed my toe getting back into my bed. And while I laid in bed with my toe throbbing, Rex decided to start snoring. I did drift back off to sleep before the clock said 4. But around 5, some terrible fiend must have come into the yard ( maybe a oppossum or raccoon) because the dogs went into orbit and stood by my window and barked for 15 minutes or so. Nobody reset Trey's clock, so around 6:30 he ran to my room and jumped up into bed between Rex and I. I got him tucked in and thought he was convinced to sleep a bit longer. However, I felt him poke me several times, honk my nose and trace pictures on my face before my alarm went off at 7am.
So, why am I so tired after getting an extra hour of sleep?