I don't exactly know if I qualify as a "lurker," but I sure as hell don't post a lot and spend a lot of time reading. And I'll tell you why, from my own perspective only of course......
I am so rock bottom with depression that I have hardly any enthusiasm to even type (I'm only typing now because I'm really pushing myself.) I just can't be bothered around 99% of the time. I cannot even help myself, so how am I gonna help others?? I pride myself on not becoming a hypocrite.
Now, I read because I want to see if many people suffer with the same kinda problems as I do. I'm usually left disappointed, because while a lot of people moan about their respective family members "not caring about them," all of my family are either dead or insane. Personally I would give anything for a few of my family members to be alive to "not care about me," but that's just my thoughts and I'm not dismissing anyone elses problems by any means.
But that's my own perspective, inside the mind of a semi-lurker. I hope that maybe injected some insight for you.
EDIT: My post count has now reached my age, how cool....