This user is old enough to remember what a typewriter is, and that's all you need to know.
Greetings
I am a scientist and engineer based in the UK. I was very impressed with what I saw in Wikipedia and strongly support its NPOV ideals. So I began editing pages in February 2006 based both on my work and spare time interests, and enjoyed both adding further material and learning from the unique and expanding body of wikiknowledge. It is good to see how many thousands of people all over the world who have deep knowledge of their special interests and hobbies, but who would never get round to writing a book on them, are now able to share this with others. When I was a child I used to imagine a magic computer that would tell me everything I wanted to know about any subject; Wikipedia has got further towards this than I ever thought possible!
However Wikipedia has its limitations and I reduced my active editing from the middle of 2007 for two reasons. Firstly, I found that a small number of users with a strong POV could repeatedly edit a page so that it became very hard and time-consuming work to keep things balanced. Secondly, the open access to editing meant that some popular pages were frequently added to and lost their "shape" - this was the case with the main list of railway accidents, where lots of trivial incidents were added and obscured the key historic events. This is the price paid for not having an overall editor or group in charge of pages. Nevertheless the gains from wide sharing of knowledge outweigh the losses - as long as we sometimes take wikiarticles with a pinch of salt... I continue to edit articles and add to the Wikipedia body of knowledge on an ad hoc basis.