Sure, users should be encouraged to ask questions! We like well-formed questions. But there was a pattern forming so I had to react - especially for forgetting to mark the questions as accepted. I understand that newbies or one-time users sometimes don't do always do that, and maybe even never return to the site, but when an experienced user has so many questions "abandoned" it could signal trouble.
And I agree that many of the questions, even if duplicate, contributed to making certain things already answered before easier to find. That kind of housekeeping I like. But then please find relevant existing answers and answer the question yourself to make it easier to the rest of us.
Other questions prompted people to write informative answers, which is the goal here - good questions and good answers. Thing is, this site is entirely operated by volunteers. So, I'm hoping regulars here also give something back other than only asking questions. It's the asymmetry of questions & answers which bothered me. I mean, after so many questions one would expect an user to have learned something and start to share the obtained knowledge and help around the site as well. Since there was no indication of that, motivation to answer that user's question starts to go down, and at the end could become a housekeeping chore.
If you learned, then please share it back! And try to give quality answers to other questions, even your own. Quality is really important in making the site a success. Also, it would take the workload off the rest of us. Effort & research is appreciated! Asking vague questions which require others to do all the work for you is not.
There should be a guideline somewhere... https://stackoverflow.com/help/how-to-ask