Why scammers ask to transfer money through Western union?

I think it's because Western Union offers fast and convenient money transfer services that allow fraudsters to receive funds quickly and anonymously. Also, Western Union transactions are difficult to trace, making it difficult for law enforcement to identify and apprehend fraudsters.

Western Union's payment system is acclaimed by many scammers on the internet because it allows cash withdrawals and in a relatively anonymous manner. As a result, he has earned a very bad reputation among individuals.

Unfortunately, you cannot always get your money back if you have been scammed, especially if you have remitted money or if you have paid through a bank transfer service such as MoneyGram, PayPoint or Western Union. All of these services provide advice on how to avoid fraud and scams. So it's a good idea to read their tips to protect yourself from future scams of this type.

unbelievable... However, sometimes you can find something you're looking for in very different places. 

I had almost the same situation, but suddenly she was real. Tatiana asked to borrow her $100 to buy tickets, gave me her credit card details. And we met in few weeks in Manchester, plus to it she paid her debt.

Probably because they get money in cash, so there's no way back for your money.

IDK for sure... Never happened to me before

When sending money via western union bank, you can stipulate certain requirements from the recipient, ie they need to produce photo id and obviously the pick up reference number, but more important passport and photo I’d 

then you tell western union bank that’s the requirements for the funds to be released 

Scammers if reported can be black listed at western union & they will recieve no more future transfers

Sure like any other scammers know that once money is received through Western Union or MoneyGram it’s theirs there is no getting your money back.