Are one-time users’ questions worth elaborating on?

As mentioned in another thread, some new members never come back after asking just one question. Some ask questions that are interesting to contribute to and follow up.

Oftentimes, these one-timers never make a comment on the replies or even worse, like yesterday, one of the questions just disappeared after I had taken a good minute to analyze and comment on their question just to see it disappear in a few hours.

In general, it is not easy for me to express my thoughts in just one line so it takes me a little bit to write a piece that actually explains the ideas that I want to express, and I tend to elaborate somewhat.

Today, I saw a first question of a new user and was hesitant to even bother because it feels like two ships passing in the night.

I know this is a pastime for most of us, but is it a waste of time with one-timers?

What’s your take on this?