Comment by throwway120385

It's actually a really dumb thing to say and OP's response is the best one because it's a microcosm about how the world works. For every Terence Tao there's probably 20 more people cranking out high-quality work that's just a little less inspired. Their work is valuable and important, and asking that question is devaluing the entire endeavor of human knowledge. It's essentially positing that nobody else can contribute anything if it's not on that same level. It's like asking "why bother competing in marathons if you haven't won any?" Well that's not the point.