Why is it that a wife cannot refuse for sexual relations with her husband and has to go to him even if she’s on a camels back, while a husband can refuse sexual relations for four months straight?

Allah has created males and females differently with different needs. He knows best. No one is better than the other. The 4 months thing is the minimum. A husband should respond to his wife’s needs for sure and not wait for 4 months. These rights are bare minimum and a marriage may not survive.

Maybe the husband needs to be encouraged by the wife by use of clothing, make up, perfume etc