OK. You want a name? Here's a name: James Mutuse. Look him up on Athlinks.com (not all his races are listed.) His name is fairly legendary here in central Kentucky. He is still a pretty decent runner, could probably run much better, but he doesn't seem to want to train at the level he did back when he was at his best. He enters races all the time when he's not at his best. You can see from his times they are all over the map. Why don't you ask him what motivates him.
As for some of the absolute creme-de-la-creme in the sport. If you were to know exactly what they go through to be world class athletes, I think that you could very well understand why they take a big break after they quit going for their peak world record breaking attempts. The principles at play are not at all the same. Comparing you in your "peak fitness" and your pedestrian-level training regimen in what could be described at best as an obsessive hobby is not in the remotest similar to the grueling schedule of a world class athlete whose entire being is engulfed in the sport. Not even close. So sorry there are not similarities to be drawn from that.
I'm not just saying this flippantly. When I was a teenager back in Wisconsin, I trained with world record setting speed skaters a lot and though I felt I trained *very* hard, it was nothing compared to what they did. I wouldn't even try to equate what my "detraining" was compared to theirs.