as we know .. life is time .. and time is money and money is studying and studying is brain and brain is human and human is one of everything that god made to make this life meaningful .. so life is dependent on humans .. and humans cannot exist without life ... life is dependent on u my friend .. and u're dependent on it too .. i used to say : god i wish i didn't come to this life :P but many years after i discovered that life has no meaning if we don't face some problems and one of the greatest things i knew is that life is a great teacher .. and without its help we'll just be ignorant .. and by being ignorant we won't reach from it the mysterious experience that everyone needs to strive to the maximum satisfaction .. sadness and stress are just challenges that life wants us to defeat .. fighting till the last breathe is the key for our resistance in this life .. by giving the best shot surely we'll be at least satisfied and proud of ourselves .. many persons asked why shall we live if we;re living to die .. some of them found the answer by considering happiness as the most important reason for achieving what they want to do in life .. but others took advantage of life's mysteries to satisfy their unconscious goals and ending their lives before too long ... i advice u people to live as long as u can .. meaning by this : to live happily without madness and stress and sadness .. and may ur life be full of gr8 memories but not full of disasters and mysteries .. and try to understand life and learn from it in order to have a life full of satisfaction .. adventures and perfect memories .. gd luck!