The loan officer or mortgage broker doesn't earn more for selling an FHA loan (federal law prohibits basing compensation on loan terms). Chances are, he or she feels that it's the best loan for your situation or the one most likely to result in approval. However, a lender should be able to explain the reasoning behind a recommendation, and no one should feel pushed into a product.
Ask your loan professional why he or she is positive about the FHA loan (instead of a conventional 97% loan, for instance) and see if that explanation makes sense to you. You should probably speak to more than one lender about your options and compare mortgage quotes from several before committing.