Yeah I feel that they are overzealous in closing useful (to me) questions, but its hard to know what the site would be like if they let discussions go--perhaps it would make it a lot more difficult to find the answer you're looking for.
Because so many questions I've found useful were closed, it has had a chilling effect on my desire to ask questions there. I used to ask questions regularly at the beginning.
But now, I feel like my question is probably going to be flagged, so why bother.