Why?

I am there
But I am not there
I am hearing them speak
But I am not listening

I want to talk
But it's all useless since they won't understand
Making a mockery is way too easy
But understanding the real reason behind all this silence is way too difficult

It may seem like everything's alright
But nobody can tell that something is wrong
Why am I so lost in a place that I've known so well?
Why am I so quiet among the people whom I call family?
Why do I feel alone when I'm surrounded by so many?

Where should I go to find peace and a place where I belong?