it is a good thing to give constructive criticism, but just to complain about something is NOT contructive criticism. you got to understand that there is people out there that can't take that harsh criticism..
humans are animals, and yes, you can verbally abuse an animal or human and get what you want. but not in the long race. sooner or later the joy will disappear, and you have years of therapy before you..
i've had sereval nervous breakdowns thanks to that kind of criticism, it just got me to feel useless, and the only way that makes me through the day is heavy medication. just because criticism..
when you criticise something, don't just point out the bad things. you have to encourage the person, see the good things aswell. otherwise they will not learn.
there is beauty in everything. you just have to see it.