Did you stay up to watch it leave or did you set your Tama's clock to make it leave early?? Either way, it's still sad seeing them float off.
P.S. Next time, post topics like this in the "What's On Your Mind?" forum. They will probably get more feedback there. "Help For New Tamagotchi Pet Owners" is mostly for questions you have about your Tama. .
This is on the wrong board. It should be on "What's on your Mind". Just remember that. I stay up really late to watch my tamagotchi leave all the time. I often put on some sad music if it's a character I loved. It's very sad. Try drawing a picture of your tamagotchi to remember it!