Why is everyone looking forward for a removable battery in ? (bit of a confusion)

[AC Question]

i cant understand why everyone wants a removably batttery on their mobile devices everyone is posting bout it and looking forward in new phones coming can anyone tell me why do they want this convenience and also on why does every website asks for a " i'm not a robot " verification i mean no robots gonna ask questions anyways or is there a missing robot in the zoo lol

 

[anon(632115)]

Some like to carry a spare battery as a full charge may not last long enough
Batteries degrade over time so harder to replace in a sealed unit.
The robots are to stop spammers and things like ddos attacks