You (and your friends) are in the stark minority. I worked on a product that drove product recommendations using Facebook interests. It worked great. People list their interests on Facebook because they want to personalize their profile page and share their interests with their friends.
When you create a product like this, every decision you make "artificially limits" your market. But often these decisions open up other parts of the market that would be inaccessible otherwise. For example, the time they would have spent on building alternative login options for people like you would probably be better spent adding features for the people who have no problem using Facebook connect, and who list their interests on Facebook.
When you create a product like this, every decision you make "artificially limits" your market. But often these decisions open up other parts of the market that would be inaccessible otherwise. For example, the time they would have spent on building alternative login options for people like you would probably be better spent adding features for the people who have no problem using Facebook connect, and who list their interests on Facebook.