Latin women watch Hollywood romantic comedies and they are looking for a guy more like Cary Grant or Matthew Mc Conaughey and a lot less like Al Pacino in Scarface.
All in all, for American men it is easier, faster, and simpler to travel to Latin America to meet a beautiful Brazilian bikini girl or a hot Colombian bride than it is to fly to Thailand or Ukraine.
Another attraction of Latin mail order brides is that a lot of guys believe that the language barrier will be easier to overcome in Latin America.
Even if you can't afford classes you can sign up for Duolingo or Skillsilo and get your language lessons online free of charge.
And please avoid cheesy one-liners you've learned online, or heard from friends; even if you're only looking for a hookup - Latina girls have heard them all before, and this includes referring to Latina woman as a "hot tamale." Believe it or not they don't like being referred to as food items. If you meet a Latin girl on one of the various Latin Dating sites, and become involved in an online romance, you will eventually want to take the relationship to the next level.
So, the main reason most Western guys want to date women from Latin America is that women just as beautiful as Eva Mendes and Salma Hayek live in these countries, and many of them are single.