Marriage is not expensive for the vast majority in Somalia and most marry relatively easily and young. Polygamy is also normal and halal.
You should instead worry about the "non-sexist" feminist western countries that have popularized prostitution and only fans, family has collapsed, and there is an epidemic of single childless and depressed women.
You are a few decades late with this nonsense, everyone can see the misery it has caused.
Only following Islam and its rules guarantees everyones well being.