In my opinion, Western Union proves to be a more secure way of money trading and paying, However, Bitcoin is far superior due to its low transaction fees, good security and simplicity!
for some people who not know about paypal, bitcoin, and other online processor Western union is best option, because he can send money instan to other country although the fee very high.
yeah for one who is not much into the internet use, western union is a better option. Western union have given lot many services with certain time limit and fees. So upon our need we can choose the required form of transaction.