Another advantage of the SSD is lower power consumption. Although I haven't quantified it, it feels like I'm getting a 20% longer run time on my battery with similar load. Yes there are a limited # of write cycles, especially with MLC and worse on the Samsung 840 (non-pro) TLC, but I don't think about it because as prices come down & capacity goes up I'll put the latest and greatest in my most used machine and migrate the older ones down.
I also run a home Linux server 24/7 and feel better with the lower temperature & energy usage albeit small.