Read what John O'Shei said about hypergamy. In that instance he is 100 per cent correct. I've studied this topic in detail.

Marrying a poor woman is a very bad idea. The hypergamy instinct is strong in all women, but more so in women from poor backgrounds and race/nationality
makes no difference.

Poor women are less motivated and are more likely to take the easy way out. If they can just marry for money they will. Women born into wealth have less motivation to marry rich men, but they still have the hypergamy instinct. All women have it.