Thanks all for the responses - and birthday wishes.
Reading through the responses makes me think that my original post may have come across as being a little bit too somber.
I am looking forward to the future - I was mainly curious as to what others thought about the 50 "milestone", and whether it affected their perspective.
I was also curious whether those who are younger have thought much about it (I guess we have found at least one topic that Marko doesn't want to comment on - or start a poll about ).
And with respect to my passing on best wishes to Jorge and to Cheryl Jacobs - I wanted to do so, and I thought it added appropriate perspective to do so in this thread.