Western Union takes up to 10%! Of people's wages, often cash wages of low income people. You're assuming I think incorrectly that the value add won't cause people to find another way to circumvent. Either learn how to transfer BTC yourself, use a system someone else wrote that your friend told you about, or even use a different crypotocurrency.

Secure isn't a problem if you don't assume every exchange is a Mt Gox waiting to happen.