I use sublime in exactly the same way. I've written hundreds of blog post on it. I use it for light data manipulation and other file editing. For writing, I like how I can move text up/down like code when I want to move around items in my outline. I showed a writer friend of mine this and it blew his mind (he doesn't know anything about text editors).
For data manipulation, I like multi-line cursors. Sure, I have expensive IDEs that can do this too, but sublime is great for non-technical people and it's very affordable and lightweight as you mentioned.
My other friend spends a lot of time in spreadsheets, and he was trying to import a bunch of tabular data one time and it didn't quite work due to the source formatting. I showed him how to pull it into sublime, quickly add some commas and remove some junk data on every line to get it in shape for importing into Excel. He loved it!
For data manipulation, I like multi-line cursors. Sure, I have expensive IDEs that can do this too, but sublime is great for non-technical people and it's very affordable and lightweight as you mentioned.
My other friend spends a lot of time in spreadsheets, and he was trying to import a bunch of tabular data one time and it didn't quite work due to the source formatting. I showed him how to pull it into sublime, quickly add some commas and remove some junk data on every line to get it in shape for importing into Excel. He loved it!