Kundalini, I had a similar observation. Many people new and old, only post to get answers to their questions, and rarely respond to others, or only come here when they need something rather than regularly reading the forum, and learning things even if before they need to. I rarely ask questions because I have already seen the answers before I even needed to know. I have been amazed how many members that have been here for a year or more, have asked about color space issues, even though the question was answered a week prior, and 50 times within the last year.
This forum is an amazing resource, but many use it not as a library of a wealth of information, but as a place to go to get an easy answer withought having to work for it. Research allows for the greatest understanding of a topic, but I see people just want the bit of information that solves their current problem, and they move on, without that greater understanding.
You Kundalini, are a great example of someone that has taught me a great deal about lighting, by reading your posts to others, and using diagrams, such that I don't need to ask the basic questions repeatedly asked here.