Truth...?

Today in AP english, we had a very profound discussion about truth. Is there really such thing as truth in the world? Does it even matter? Many said that truth is a form of bonding, a way to bring people together through trust and honesty. Others believed that it was based on opinions. Every story has a different truth, based on perspective, and facts, such as 'the sky is blue' are truth. But when it comes down to it, are facts even truth or are they just commonly agreed upon and accepted ideas?
I personally think that the actual meaning cannot be understood by the human mind. Thinking about it just hurts my brain...but what I have come up with is the opinion that truth is just a word to be applied to things that one believes are real. There is no such thing as universal truth, as each person has their own opinion and, therefore their own truth. This being said, truth seems unimportant. If each person has their own perspective, no one will have the same truth, so this makes me question how valuable the truth is. However, I believe that honesty is necessary. I think that honesty is different than truth, because it involves not lying or embellishing your opinion. It means that you must tell exactly what happened or what you believe; being straightforward and conveying your perspective to someone else.
This is such a confusing topic...but I hope it gives you something to think about! :)