Retro computing to me has to benefits:

1. As mentioned by robinsonb5 -- "wise use of resources". I believe developers should test their changes on old hardware to ensure it will be fast.

2. How much I really miss laptop monitor sizes 4:3, 16:10 is a decent 2nd choice. I hate 16:9, which is the most common.

Updated per kazinator post. I got 16:9 and 16:10 mixed up