I've been told that much of what you have to learn isn't really needed. Never mind, I'll just keep plugging on....
At any flying school you will find someone who will tell you that most of it isnt needed. These people are called aviation clairvoyants and they know exactly what you will be flying in 10 years time and where.
When I was doing my CPL at Cass College there was a guy who used to complain every day that he did not need to do plotting and navigation etc etc because all he wanted to be was a crop spraying pilot. The next time I saw him he was an air taxi pilot!