Why do stars go super nova?

First of all lets get this strait; humans are very biased and unimaginative.  While looking for life on others planets, moons, etc.  We all assume that life will be like us, made of organic compounds (proteins, DNA), and confined to a planet/moon/comet/etc.  So short sighted.

See, stars are actually alive.  It would be interesting to know what they think of us, confined to a planet instead of roaming the vast cosmos, only live about 80 years as opposed to billions of years.  But people and stars are more alike then people give them credit for.  Both maintain thermal homeostasis.  People can be big or little, stars can be big or little.  People can be white, black, brown, yellow, red and possibly others, stars can be white dwarfs, red dwarfs, brown dwarfs, red (super)giants, blue (super)giants, our star is yellow, Krypton had a red one, and there are also black holes.

Stars are actually very social creatures.  But in space no one can hear you scream, or talk, or even whisper; or so they would have you believe.  While this may be true for humans, stars don't communicate via sound waves, which can not propagate in vacuum.  They use gravity waves.  Gravity waves can and do propagate in vacuum.   Gravity waves are like yelling, best for public announcements.  Personal communication is typically carried out by radio waves, or other forms of electromagnetic radiation.  Some stars, like pulsars, almost exclusively use radio waves but this is easily intercepted and not a secure form of communication.  (Some think these are crys for help.)  On earth we have even received these messages, but have yet to figure out what they are saying.  Stars like ours use solar flares to communicate directionally and comets for private communications.  Comets are the interstellar couriers. 

Stars also have geopolitical boundaries, just like we have countries.  Our star is part of the so called "Milky Way."  I don't know why it got named after a candy bar so don't ask.  I mean, stars don't even like sugar, they prefer hydrogen and its isotopes. 

Stars also have celebrities, just like us.  Polaris is currently one of the most famous.  Some stars are famously bright, others are great broadcasters, others are known for stupid antics, some are all three.  Also like us, many stars feel it is better to burnout then to fade away.  This type of star burns out by going nova.  A recent example on earth would be Brittany Spears.  Basically these stars just get real big, and waste their youth on trivial pursuits; getting old before their time.  Once this happens people get the chills just looking at them.  They are burned out before they even get to the good part of life, by which time no one even cares.

On earth most washed up stars become spokesmen/women for infomercials.   Stars on the other hand become nebulas. 

The alternative for a star would be to slowly fade away into a dark spot that no one ever sees again and no one cares about.  Left all alone, growing cold.  But after going nova you have the chance to become a black hole, dragging all those around you down also.  But at least there is a lasting impression of you in the world, even if it does help destroy the fabric of your society.