How on earth do you find time to post 72 reviews in three years ? i am assuming that you had to read all 72*400 = 29 thousand pages approximately before you posted those 72 reviews. And also post 9500 messages at JR and then write newsletters articles and then teach at a university all at the same time ???
In addition to having a real full time job. It helps when you have no friends to clutter up your time with. Actually, I am a fast reader and I don't need a lot of sleep. I can get through a technical book in a week or less.