What do you think of relationships not based from friendship?

If there's initial attraction between the two why not start out romantically. That's how my boyfriend and I started and we found we have so many common interests and also many different ones which keeps it interesting. Through the course of our relationship we've become best friends as well as romantic partners. I don't know what I do if I couldn't spend at least one day a week with him. I do agree that there has to be a friendship between two people for it to work, but it doesn't always need to start out that way.