Comparitive and superlative

One of the quirks of the English language that is dying out is the difference between the comparative and the superlative. Here's how the difference works: Suppose your significant other wants help in choosing a new pair of pants (note how gender neutral this all is?). Now, the SO shows you two pair and asks, "Which pair do you like most?"
That's "wrong" (please note quotation marks). It should be, "Which pair do you like more?"
When discussing two things, we use the comparative: more, better, bigger. It is only when we move to three or more things that we use the superlative: most, best, biggest. Suffice it to say that the usage is dying because it's not very useful.
Normally I can usually think of some historical reason why a really silly rule should be in place, but this one defies any explaining. There are a number of languages in the world that have a kind of three-tiered system for numbering things. It goes one, two, many, as if -- once we get beyond two -- it's just not worth it to be specific. I don't think that's the case here, but with language you never know.
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