You argue as if this was some sort of an isolated question. It is not. And I am not talking about opinion polls or anything like this. You just have to imagine what it means if Bitcoin is becoming unattractive for small payments. It means that some users will stop using Bitcoin and look for something else, which will relatively* hurt the value. The majority, whoever that is, will have an interest to maximize the value of their assets.
*) Even if the value is still rising and not dropping, it may rise less in case of fewer users than it would rise in case of more users.