You'll be waiting a very long time.
> Considering my Kindle lasts over a month on a single charge
Your Kindle isn't maintaining a bluetooth connection to your phone or updating the screen frequently, and has a much larger battery than a watch.
> I never have to think about charging my watch so I can always rely on it having the information I need.
With the Pebble you don't have to worry about it either. It notifies you when it's getting low (has a day or two of battery life remaining) and you charge it when you get the chance. And if you don't have time to give it a full charge, in my experience with just 10-15 minutes charging time you'll get a few more days of use.
I agree with your sentiment about battery life though. It's why I don't understand why anyone would even consider any smartwatch besides Pebble. Fall asleep without charging your watch one night and you can't wear it the next day? That's crazy. It also means you can't really use your watch as an alarm if you need to charge it each night.
