When someone says Jedi what do we think? Probably we think the force, lightsaber and old men with beards. But really there is so much more. You dont just go around and block blaster shots and persuade people to not see you. You have to: protect the innocent and defenseless, sometimes accept and train a padawan, battle Jedi, right wrongs, not take sides and restore peace and justice to the galaxy. As you can see it's quite hard work!
Plus the apprentices have to get picked, do rigerous training and tedious chores and tests, make a lightsabre, risk their life frequently and study and train in the force AND they have to put up with their masters!
(P.S someone take me as their apprentice!)