Yeah! I had this insight when I started running. There's a hill on the Harlem side of the Central Park loop that used to kill me (I'd start my run at Columbus Circle so by the time I got to the hill, I was already exhausted -and- there was a bunch more to go!) I used to think "man once I get good at running, I am gonna eat this hill for breakfast" and then I realized you never get to a place where you love/don't notice it, it just becomes something you end up doing at a higher pace or as part of a longer run, etc.
More recently, I realized that my Peloton rides "feel" about the same as they did 2 years ago when I started. I still sometimes feel "rusty", sometimes out of breath, etc. What changes is that the mileage/output I produce for a given amount of "feeling" has gone up a lot.
Maybe broadly, I don't feel like I am working much harder now that I have a ton of work responsibility vs when I had smaller scope. Or now that I am a husband/dad vs when I was a single guy/dating. Life feels about the same level of difficulty, but there's a lot more being accomplished.
The positive thing is recognizing how much more is being accomplished. The "other" thing is recognizing how much MORE can be accomplished if I reprioritize/focus/etc.