When you know other people have it worse then you, then YES, that IS a reason to conceal your sadness. Not always but at least sometimes. It's stupid to say that here.
@comeonnow0, depends on the social situation. However, the point here is just because there are kids starving somewhere in the world, it doesn't invalidate you feeling sad if you're having a rough day.
@comeonnow0 I mean suffering isn't a competition just because someone else might be going through something worse that doenst make the bad situation of other magically stop hurting