Hi are you a multilingual? I speak more than one language. 
Nope I only speak english 
Well then you might be in the minority. Multilingual speakers outnumber monolingual speakers.
I wish I spoke a second language a lot of better jobs require it now
You're right, multilingualism is becoming a social phenomenon due to globalization. 
I know an employer will pay a premium for bilingual employees
I think it might be because they are reported to be more adept at communication. 
Yes it definitely makes one a more valuable employee the company will be willing to invest in