It is worth it?

 I have contact with a dilemma today.
About friendship, relations, trust.
The dilemma is: We need love, attention, but we can't trust in anyone.
We need to feel that someone love us, that cares about us, that we aren't alone. But for that we need trust. 
We can't trust people, everybody know that. We will get hurt no matter what. Is human nature just to care about themselves.
When we make a connection, a bond with someone we stay happy, we feel somebody its here to support us but when we realize that are bunch of lies, that we put some much trust and faith in that person, we feel empty, desolate,betrayed.

My question is worth feel the pain just to feel that happiness in the begging?
In think that is not worth, I prefer spend all my life alone, without anyone inside of my world then feeling the pain when a link is broken.I have felt so many times that pain but for some stupid reason I forget it.

Main words: pain, trust