I think it was late 1988 and was an early 486. As to the rest I suspect you're entirely correct. Some aspects of recycling are very attractive as they enable one to feel virtuous, but they're just not worth the time and effort, both of which become more valuble as one ages. A few years ago, I was thinking of an Arduino based washing machine motor speed controller for a honey extractor. I found detailed instructions and a video somewhere on the internet and downloaded them. I have no idea how long it would have taken me. Instead I bought the whole lot including motor (with reversing drive too) ready built using brand new exercise treadmill parts from a source in Germany who turns them out for a living for £30, maybe $40. Long live eBay! The time I saved I spent with my bees which is far more enjoyable.