This is a funny thread filled with funny responses. Of course attractiveness matters.
Those who talk about "confidence," for instance -- well, yes, it does help to be confident. But where do you suppose "confidence" comes from in the first place? If you're a good-looking kid, for example, the world is going to respond to you in a certain way... a way which will encourage you, and help you to develop that confidence. If you're bad-looking, the world will respond very differently. You will be met with rejection after rejection. Good-looking people have a tremendous advantage, both in this regard and in many others.
People discriminate, unfairly, for all sorts of reasons. We talk a lot about "racism" and "sexism" and etc., because they're easy to identify and have social and historical prominence. But we also discriminate based on socio-economic standing, base attractiveness (I don't mean "hygiene" or clothes, but those mostly unchangeable physical characteristics with which you were born), age, height, weight, and a host of more-subtle physical and cultural factors.
Are there "ugly" people who succeed, in all sorts of ways, despite this? Of course. But that doesn't mean that the general discrimination does not exist, anymore than the election of Obama proves that racism no longer exists. The OP deserves to be taken seriously. It may certainly be the case that, right now in society, the best response is just to take control of those things that are within one's power (e.g. work to be smart, to dress well, to earn money) in order to have an easier time of things -- but let's not say that prejudice or discrimination against the less beautiful does not exist.