In 1997, I took a job working for the Linn County, Iowa, IT department. And when I was working there, I was close enough to the office that if I really wanted to, I could come home for lunch. Frequently I did, especially before getting my first paycheck. I could come home and eat what I had on hand and not spend money on fast food.
Thereafter, I ended up at Rockwell-Collins, which was a bit too far away (in time, not in space) to be a viable option. The drive was not really all that much farther, and as the crow flies the R-C plant was not much farther than the Linn County building; but the route to the county building went around the edge of town and the route to R-C went right through the shopping and dining district.
In the present case, my trip is 15 minutes unless I run afoul of trains.
And because last night's dinner was a rotisserie chicken, there were plenty of leftovers; I'd originally intended to take it with--but I ran out of time this morning, and then realized: I live 15 minutes from my job. I can come home to eat!
Don't know how often I'll do it, but it sure is nice to have the option.