Human beings are nothing if not the sum of our experiences. Everything that we experience collects together to create our personalities, traits, our very beings. As a result of this, we really, in the great philosophical sense of things, should not regret any of our experiences. Without any of these experiences, we would not be our full selves. We would not be fully complete. As a result, we should be grateful for each and every experience that our lives are made of.
     Having said that, I just wasted 90 odd minutes of my life watching "Paranormal Activity 2". 
I truly regret losing that time.

It sucks.