Exaggerate much?
In the US the average lifespan is 78.06 years x 365 days x 24 hours = 683,806 hours.
Not generally. I could have just as easily said, I've spent my life, my career, countless, forever, or umpteen, or any other regularly used euphemism.
But I'm guessing if you are wanting an exact hourly count, no matter what it is, it wont change your opinion of my qualification on the subject.