[mcn]

>Past polls show that a substantial portion of readers (me included) think the points are very useful. They draw our attention to the best comments.

That is not the primary reason that I want points back. I believe that allowing people to signal their opinion with public upvotes discouraged redundant posts, and that visible upvotes encouraged participants to let their arguments stand rather than creating unnecessarily deep threads.

A secondary issue is that votes were a valuable part of the signal in many "Ask HN" threads.