How secure is a social media marketing career for the future?

[Stacey]

I am completing my final quarter in college and am also working as a content writer, editor, and social media marketing person for a non-profit. I am pursuing a career in social media marketing because it offers companies free publicity, instant access to millions of potential consumers, and a great and simple way to communicate with those consumers in ways that other media does not allow.

My question to you is, do you think this career choice has a secure future? Do you think social media marketing jobs will increase in demand in the long term or do you think this is just a fad? Your input is appreciated.