I think despite how we all try to find the reasons for not playing, in the end it's as simple as just losing the desire. I haven't flown in forever, and despite getting a new machine to handle the new version and even installing it, I just don't have the itch to fly. Over the years it's always come back, but right now I just don't have it. Don't really have much interest in the boards too. This is the first time in a while I've taken a look.
Would I like the game to be what my memory tells me it was when I was really into it? Sure. Was the game really that different then? Nah. I'm the bit that changed.
Dan/Tiff/CorkyJr 's post above is the simple truth of the matter for most.....
I, going off of memory, think the worst time that really hit the attendance started hitting near end of 2008 ( election year ) and the following year of 2009 where the economy tanked... here in the US, people were losing their job's or taking pay cuts, losing their homes, losing family members due to 2 war fronts being fought..... it wasn't pretty and it lasted for years
but times are a changing ( always are , everyday, actually )
This is also an election year, 8 years later... HTC is well into the Open Beta and I am witnessing the return of players I haven't seen in 6 to 12 years...... hoping things keep picking up for HTC/Aces High steadily, like has been happening for the past year or more......
*seeing more new players
*seeing old friends return that have been gone for a while
*seeing different Events beginning to pick up in attendance
*watching/seeing HTC's AH ver. 3 Open Beta improving/advancing at a quick steady rate
*observing the AH CM Staff & AH AvsA Staff and AH Trainers, very motivated in keeping the events going strong, or bringing new events to the community
*seeing individual players stepping up and creating weekly regular events ( AvsA Monday night Madness (or Mayhem ) and the AH Community attending and supporting
*seeing less pessimism from players, and observing more optimism
*"It's Getting Better Everyday"
I know I don't fly/play as regularly as I did 10 years ago, but it isn't because I don't want to..... I myself have been playing AH with injuries compounded on top of each other since Oct. 2003....so I actually sit in my chair in pain, just to play AH and to fly with my friends, and bare the pain for as long as I can until I simply have to log off....
desire/burn out, comes and goes.... and every individuals limit is different............so you can check out anytime you like, but you can never leave!

Real Life always comes first, before the game...... but aside that, and a players desire to play or being burnt out, is about the only reasons I see someone hang up their hat and eject themselves from the game...... I just hate seeing players I have known or played alongside or against for over 20+ years simply disappear to never be heard from again.....
I hope to keep seeing more New Players and Old Long time friends, keep returning.....as has been the case lately......
Sincerely,
TC / Johnny