Throughout this thread, people have replied that "it's impossible, because it's canon, and CLAMP meant it to be that way".
I would get angry (of course) but I would just be cool - and shove all the evidences to their faces.
It's not about evidence.
I would wonder at first if they really know enough of the anime to hate SxS.
It's not about knowledge.
I'd stare at them and say, "Gosh! You are soooo outdated! They ARE officially canon, y'know? Just keep your opinion to yourself!" Haha! I wish!
It's not about being outdated.
...I don't have to say anything because it's canon. No matter how many time we try, we'll just end up with the SakuSyao pair. We'lll always end up with the CAAAAA-NOOON.
And it's most definitely not about canon.
You're taking this discussion in the wrong direction. It's not about what is official, or true, or possible, it's about what fans want. Some people don't care if it's canon, some people don't care if CLAMP meant it to be that way. Maybe they wanted Sakura to be with someone else. Perhaps Tomoyo. That
is an established couple, no matter how you look at it, and even if it's not canonically two-sided, some fans like to extrapolate on the idea that Sakura and Tomoyo may indeed become lovers in the future.
Personally, I'm a devout S&S fan. But I'm also a devout S&T fan. I think the relationship Sakura shares with everyone in the anime is very important to take into consideration, and while Sakura x Syaoran is predominant, Sakura x Tomoyo is no exception.
In fact, if Sakura and Tomoyo had shared a kiss in the series, I would have been insanely happy.
If they don't like Sakura and Syaoran, then fine.
It's not set in stone, that you HAVE to like them, now is it?
Even if it is obvious that they love each other.
If someone dislikes them, then they dislike them.
End of story.