yea the writes will shorten the life of a SSD but people are underestimating the life of SSDs in general.
As a tip (from http://www.anandtech.com/show/7173/samsung-ssd-840-evo-review-120gb-250gb-500gb-750gb-1tb-models-tested/3)
a 250GB samsung evo should last 8 years with 50Gigs of data written to it every day which is unlikely in your case. you would have to be watching HD video for a large portion of the day to even reach 50gigs.