Why do photographers use more than one lens?

for many reasosn every lens do shoot a certain type, each lens has a specific angle of photography

I think, it's more about perfection and perhaps achieving a higher difinition of a certain object.

Photographers use more than lens so they can take all the sides of an object and then they will have the choice and more options for choosing the best side of it

To get higher definitation of photos, angles and less enhancement.

Because they vary in the ability to do one or many of the following:

- how much light the lens allows in with speed shutters, which affects the ability to shoot in abnormal lighting circumstances.

-how far - or close - its zoom can reach, so photography in a football match for example needs a huge lens to get close shots at players with being really close to them.

- how it chatches moving objects, wich essential when you're not shooting in a remote environment.

because there is no single lense that is perfect for every situation you will need to balance pros and cons of various option and pick the best compromise

Photographers use more than one lens depending on what they are shooting and the results they are looking for. Different lenses give you differnet DOP 

All lens are designed for different purpose depending on the range,exposure, image margin ,the requirements for what is needed after the shot

Photographers use different lenses to achieve the right focus or zoom that they want.

To achieve the correct image of the subject, by selecting lenes. Each lens has got its own speciality and behavior to capture images or to record.

Each lens serves a different purpose for different shoot thats the reason photographers use more than one les.