Well, I'm 16 years old.  The only time I ride coasters is during the summer.  During that time, of course, I'm not in school.  There's not a heavy amount of stress in summer, so I don't really need to escape reality then. ;) 
 This summer might be different, though, since I'll be getting a job.  I can certainly see how adults would want to ride coasters to get away from the horrors of bills, jobs, and anything else that might come along.  
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Matt Lynch 
Co-Webmaster, Kennywood Boulevard 
http://kennywood.coasterbuzz.com