As an almost mid-thirties divorcée, I'm not interested in wasting my precious time with someone who isn't going to be noteworthy in some sense, be it for amazing sex or a long-term relationship. At the same time, I strongly believe in taking risks in my life and, especially, in love. If I see potential in a person, I do what I can to give the fledgling relationship a proper shot.
There are tons of first date guides out there, but how many have you read that didn't really help you to feel confident going into an important first date? It's possible that you think all of these "how-to guides" don't hold much water, since you can do everything right -- and yet, if there's no chemistry, none of it matters.