[Crazy can be fun!]
Also, I'm partial to the idea that it can be universal for members of a society to be critical of other individuals or groups at times. Yet, one must be careful that one does't product too much criticism, lest one will produce a critical spirit within their self.
Maybe it's good to be careful that the hand that judges others doesn't come back and judge you conversely by the same standard. (Ex: He's insecure in love or he wouldn't have to display his love. Conversely: He's insecure in himself, in what he thinks or feels, in what others think; otherwise he wouldn't be afraid to show his love.) Usually the balance is found somewhere in the middle. Me personally, I go with how I feel in the moment (if it's positive, otherwise I deliberate & rationalize first) & whatever [reasonable] urge i have to express it; with emotion - as long as there's a time & a place that isn't ghastly inappropriate, why not?