The pressure suit helps if something goes wrong during launch or re-entry - astronauts have a way to parachute off the shuttle. The suits protect you from loss of pressure in case of emergency.
-- Sally Ride
   
Sally Ride   Name:
Sally Ride
Type:
Astronaut
Nationality:
American
Birth:
May 26, 1951
https://www.nutquote.com/quote/Sally_Ride