Quote:
Originally Posted by nik-
sooner than later relative to what?
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Well mostly because it is just a matter of time before we get hit with another large asteroid or comet. There's countless reasons as to why, space is a dangerous place, not to mention we are not doing too great on earth either with our little home.
Mostly its for that reason, the unknown dangers, we already know of many things that could end life on earth, so the sooner we get established off world the better.
Cracked had fun with this, 7 things that could destroy us without warning:
http://www.cracked.com/article_19117...t-warning.html