People already consider attraction, intelligence, humour, family plans and lifestyle when choosing a partner. Financial stability affects daily life just as directly, so pretending it does not matter is rarely more moral.
The ethical line is clear: do not deceive, manipulate or treat another person as a bank account. A wealthy man is still a whole person, and you should expect to bring affection, loyalty, energy and value to the relationship too.
Keep all your standards
The aim is not to replace kindness with money. It is to look for kindness, attraction, compatibility and financial security in the same man.