Secondly, as I just said. People are within their rights to complain when it's constructive, when it's reasonable. When all you're doing is spewing bitter bile and resentment about how everything is awful, you are adding nothing to the discussion, and you're definitely not being mature.
In fact, you're being rather childish.
See the difference?
If a bridge falls down, who do you listen to? The man that says the old bridge was fine, rebuild it, the man who argues and said the old bridge collapsed, this is how we'll improve it, or the guy that runs up, slaps both of them and then screams 'BRIDGES SUCKS, YOU'RE ALL A BUNCH OF QUEERS!"?
I know who I'd listen to.