There are no shortages of people lacking common sense... if there wasn't at least a 0.5% to 2% turn around on a couple million emails sent out, then they wouldn't bother sending that specific scam anymore. Its like if I sold polished cat turds online for 100$ a peice, I'd only need one idiot to buy every so often to make it worthwhile.
I also get these kind of email to my business email and ignore all messages. But these scammers catch innocent people to collect money. Specially most of ladies are trusting these things. We better to inform them.