i guess its like anything. I used to play semi professional basketball. I used to eat sleep and drink it for the last 20 years , played every day except sabbaths 2-3 hours a day and loved it. then i turned 35 and over a short period of time just lost interest. I still enjoy watching the NBA but i couldnt tell you the last time i held a basketball.

What i am saying is that if all you have done for a long time is one thing and it was your passion in life and then you make it your profession , then after a time that hunger and passion will diminish. That hapens with absolutely anything. I think they call it diminishing marginal returns.