Visit the most breathtaking building, landscape, etc and you spend your time taking pictures of the walls, floors, ground etc., just to get another texture.
Look at everyday objects and wonder how few polys you could use and still have a decent model.
. . . you're driving along a well-manicured residential area and see five trees in a row that look identical and think, "He forgot to randomly rotate his assets."
You think a good use of time is to scout out locations with modeling potential in Google Earth.
You have more than 3 WIP routes on the go in Surveyor.
You think 8 hours in Surveyor, resulting in no more than 1k of track; 300 square metres of texture and 5 buildings placed, is a worthwhile use of time.
to add on to that, you might be a trainzer if you spend hours in surveyor, only to find out you deleted several red switch levers and never replaced them.