What if life was just completely made up. What if you were really just imagining this? I'll go into further detail. From your perspective it might seem like I'm a human sitting at a computer typing up a post, when in actuality this could just be your brain making this all up. Perhaps your brain can even convince you things are real through sight, sound, and touch! So if pain is inflicted it may seem real when it might not be. Here's another interesting thought, there is nothing anyone can say to fully convince me they are real now. Anything they say could just be manufactured by my brain. Also when I mean my brain, i think perhaps if I am just imagining this from a different brain somewhere. To give you an idea, think of a lucid dream. Those can get very realistic, so what tells you that this isn't just a lucid dream at all?
If that is true (this may come across very self-centered and ignorant) in all likeliness everything I see in life: hate, freedom, violence, freindship, love, all those could just be to teach me values and not really be real. War in foreign countries or even seeing a horrible act right before my eyes could simply be manufactured. The brain is a very funny thing. Hmm...this has really got me thinking...
But think, is there really anything I can say to convice you I am real?