Why 42?

It appears to be 30 years ago that Douglas Adams launched the answer that has been famous for such a long time: 42.

Of all the theories, thoughts and potential answers as to why this was to be the chosen one, I think I like this one the best (lifted from the comments to the bbc.co.uk page above):

42. Is the answer to the question "What do you get if you multiply 6 by 9". Once you come to accept that everything is based on a simple error, all the bigger
errors are so much easier to live with. Brendan Johnson, Kenilworth, Warks, UK

True. Very much so, I think.