you don't see many Mexican nationals on vacation.. they never have cameras and beach chairs...they are like the cousin who comes and visits and over stays
I guess it depends where you live. Here in Canada, most of the foreigners I see on a daily basis are from places like India, foreign workers doing low-end jobs that should be going to our youth, and to be honest I don't find them or their presence in my country particularly attractive.
Evolution prefers diversity. The foreigners you find attractive are usually average in their origin countries.
Plenty of foreigners come to my country to berry pick, and they're often attractive.