It depends on the context. I like one-liners because it's much easier to iterate over a command line and building them is a bit of a personal challenge since it's not worth writing a script or saving to a file.
I don't know about most people, but interactively I use short flags and when writing Bash scripts I try hard to use long flags and will often break things up specifically for clarity.
I don't know about most people, but interactively I use short flags and when writing Bash scripts I try hard to use long flags and will often break things up specifically for clarity.