Because of the delays. I came close to letting my subscription lapse. But there was a good article in the last magazine: iirc it was to do with creating obey files (which I have never got into in my 14 years of using RISC OS). I enjoyed the article, which was said to be the first of a series, and decided it was worth resubscribing for. It is only just over a month since I phoned John to renew and the money has been charged to my credit card, so I hope this is a good sign.
I too like Archive and I feel there is room in the market for a monthly magazine and an intermittent one, but six months really is too long. If my twelve-issue subscription lasts for the next six years I really will have to rethink if it's worth renewing next time.