You can't generalize your claim to every case. Facebook ads may not be higher quality than you, but for many it is. Its goal isn't necessarily to take a purchase intent and turn that into a sale. Its target advertisers are similar to those who currently advertise on TV. For example, does watching an ad about Kool Aid make you want to immediately want to purchase it? No, but it influences your subconscious in a meaningful way.

If you look at the other replier to you, his case is different. Facebook ads are specifically for those companies who would benefit from very fine targeting, who have a long term business horizon, and want to build an image before a purchase.

What do you use Facebook ads for?

(Disclaimer: I was an intern on the ads team)