Pilot here, we do have autopilot on commercial airliners to assist us with flying accurately through the busy skies all over the world. Plus, it would be tedious to hand fly the darn thing all the way to your destination. To put it into EDs perspective, imagine you're flying your ship through a busy network of highways in the sky where flying in a straight line isn't the most efficient way to travel (thanks Earth, for being an oblate spheroid). Considering that plus the traffic in the air at any given time, autopilot was constructed to aid the pilot in maintaining a safe and accurate route throughout the journey.
They can land the plane as well if conditions deem necessary. This is done more so because of adverse weather conditions where it isn't possible for the pilots to actually see the runway until they're very close. The autopilot works in tandem with a lot of other systems to bring the aircraft down safely to the runway without much pilot 'interdiction'. Most pilots don't use this system if the conditions don't require it as there are also requirements where the pilot be able to well...pilot the aircraft with what we call 'hands on time' to be current with their license.
In conclusion, its all in place for safety more than anything else but I won't deny that a bit of pride and ego isn't involved as well