Well, thats it then, the first 4 decennia of my life have passed. I turn 50 today, hooray !!
 
My life has been well-filled, mostly by very time- and effort-consuming hobbies,  and I'm glad to have done what I already did. That being said, the toll of the years is also notice-able. The speed and acceleration have once been better, but the long haul effort is becoming more and more my thing.
Strange how the sands of time tend to slip faster when you are getting older, and another feeling is that for every thing you learn, there a 2 things you seem to forget. But, musn't complain, still alive and kicking.