ShortCut Deletion

Hi Guys,

This one must be simple, however need your expert advise.

In my org. we are about the delete shortcuts older than 2 years. 

Can someone please tell me its benifites?

As, how it will benifite Exchange, EV and the users? Can storage space be considered in it?

i got around 200,000 users and we are using EV from past 10 years.

Thanks in advance.