Indian Railways — uts app requires printing ticket which is not correct

Address:

Bangalore, Karnataka

The unreserved ticketing system requires a print out for travelling if location based booking is not enabled.
Why do we need to print a ticket and waste further money on kiosks as well as paper?
Definitely not a case for digital india.
More over the printing kiosks are most of the time are in error state or under maintenance resulting in waste of money and time for the traveler.
Please introduce paper less travels for all mode of booking.