Ok, Viking: could you define "culture" and "multiculturalism", because you're using them in a slightly confusing way.

I am not interested in imposing culture. Personally, I am not very fond of culture itself. It's frustrating enough already having to deal with the silliness of my own culture; having to deal with the silliness of other cultures all the more so. I am an individualist. I embrace culture to the extent that it seems pragmatically necessary.
Obviously, it isn't possible to have no culture; we create culture merely by existing. Even a child raised by wolves develops culture.

It's not about pragmatism but cognitive structure. We can no more not have culture (without modifying the aforementioned) than we can not have the sense of there being a here and now (which can be temporarily modified with, for instance, psychotropics).