Thru-hiking the Appalachian Trail has been on my bucket list for a very long time. Innumerable hours spent researching and planning it. I finally got around to actually getting ready to do it this year and discovered during a short practice hike that my bum hip will no longer support that kind of hiking with a backpack of any weight at all. Extremely disappointed, but I'll get over it.
DW, OTOH, set herself a goal a few years ago of doing a half marathon in every state. She's up close to 40 now, despite a few periods of enforced rest due to foot or knee problems. She's a walker, not a runner, but I'm still hugely impressed. Especially considering that she's overweight.
We're hitting two of my other bucket list items this year. This past March we went above the Arctic Circle to see the Northern Lights, and that was great. In another couple of months we're going to Antarctica, so both extremes in the same year. Yeah, blowing that dough but that's why we accumulated it after all!