I think it is much like gardening, I plant new plants every year with high hopes: some of them do very well, some of them die off pretty quickly and some of them just hang in there. But with out new plants being planted every year the garden would grow stale and boring. I think that is pretty much the same with new members, besides what is the alternative?
Just wanted to edit this to say, I often find new members to be a very stimulative thing for some of the forums. New members are often so excited to find a gardening site like this, and to be able to ask all the hundreds of questions they have, (often the same ones over an over) but many times the same question can be posed in such a way as to make me rethink an issue. I hate to say that I have seen some new members come in that I found very interesting and inspiring, even very knowledgeable and I learned and benefited from them but they soon moved on. I would loved to have had them stay.
