"Without copyright, those contracts have nothing to offer you, so why should you agree to them? Without copyright, you could freely use, copy, reverse-engineer, modify, and distribute any bits you had. That leaves you with no incentive to agree to a EULA, and numerous reasons not to."

The big thing about End User License Agreements is that you implicitly agree with them by buying the product. That is, you might *think* that merely opening a paper package which has been sealed with a sticker cannot force you to assent to the legal statement written on that sticker, but if you do, you are wrong: courts have upheld that this is a valid contract regardless of how you open that paper package -- or presumably even if you find some way to avoid doing so.

-- Drostie