After Total Distance Speed
----- -------------- -----
1 year 0.5 light years accelerated to C
13 years 13.5 light years C
14 years 14 light years decelerated to 0
That's 14 years of travel at 0.5g constant-acceleration
Just don't hit anything....
c. 1994 to 1995
c. 1999 to 2010
Mandrake --> Mandriva
c. 2005 to current
SUSE --> OpenSuse
c. 2006 to current
CentOS & RedHat
c. 2007 to current
...it's the fear of the unknown. What if it's not as good as it looks? If you're making more money and gaining an hour and a half every day it's a no brainer.
As my mother always said: "Never love anything that can't love you back." A company is a perfect example of this. And you're absolutely correct that fear of the unknown is a factor. That isn't necessarilly a bad thing -- because the new job might have unknown deficiencies (as well as benefits). Its a cost-benefit analysis without full information, rather than a no brainer:
negative aspects (less pay; long commute)
positive aspects (friends, including among management)
negative aspects (no friends, others??)
positive aspects (more pay, short commute, others??)
The question is, do the known positives make up for the risk of the unknown negatives?
Money is the root of all evil, and man needs roots.