We also speak of Western civilization, even though it doesn't equal to one conglomerate culture either.

As for 'colonialist' term ... sigh, do I care how people call Europe on Arabic or Turkish forums? Every cultural region has some lingo that reflects its history.

'Europe' itself is a Phoenician word that means "country of sunset". From their perspective, it was. Hereby I am forgiving old Phoenician colonialists (and they indeed colonized much of the Mediterranean) for naming some continent according to their local perspective. That is what people tend to do.