Why Do EULA To Me?

Webcomic Storyline: 

Help Desk, by Christopher B. Wright

Comic Transcript: 

CUSTOMER: I just don't get this End User License Agreement. It doesn't make any sense.

ALEX: Well, the first thing to understand is that you're not actually purchasing our software. You're purchasing a license to use our software, which we can revoke at any time, for any reason.

ALEX: Since it's a license to use, not to own, there are no guarantees the software will actually work, and we are not legally required to make it work.

CUSTOMER: I see...

CUSTOMER: Is there anything you ARE legally required to do?

ALEX: We are legally required to make you pay for this call. You'll be billed in a month.