This is not about lecturing. It is about telling you that you have NO RIGHT to call 10M people thieves because you allegedly have had bad experience with a very very very tiny fraction of them.
Lots of people are doing business in the DR, and you bet a lot of the transactions involve credit, and a lot of people have money invested in numerous ways. You can bet that if the vast majority lost their money doing so, those transactions and investments would not be happening.
If it happens to you so many times as you alleged, the problem could be on YOUR side. You may be a specially bad judge of character, or may be doing business with the wrong people (Dominicans or not).
That is not to say financial fraud doesn't exist in the DR. Of course it exists. It exists everywhere. In case you didn't hear about it, the worst examples of financial fraud have been committed in the so-called 'developed' countries (ever heard about the financial crisis, the bank bail outs, etc. etc.)...
And in case someone told you that Bernie Madoff was Dominican, s/he LIED to you...He is from Queens NY, and has no connection whatsoever to the DR...Are you going to stop doing business with people from NY, because of him? Oh, you hadn't heard of him? The one of the US$65 BILLION dollar Ponzi scheme? Then click -->
Bernard Madoff - Wikipedia, the free encyclopedia
And in case you think after Madoff, things are fine, check this out from Forbes:
Financial Fraud Is Growing, Post Madoff - Forbes
Preventing financial fraud by not doing business with Dominicans is flatly stupid.