Several schools of thought regarding the impact of colonialism/imperialism on the conquered people, and not all colonial powers acted with the same intent, and it would be wrong to believe only white people were colonizers. Africa is a good example, because so many western nations colonized that continent; Britain, France, Belgium, the Netherlands, Germany, Italy... For some it was strictly about getting resources, others was about religion or rule of laws or civilizing mission. Some colonizers sought to integrate the colonies with the motherland, while others had no such goals. The colonized people's experience was very different and, ironically, the greater the integration, the more bloody the fight for independence became.
The OP is misunderstanding the impact of colonialism on the colonized, the clash of cultures, of humanity versus economy, the dominant versus the dominated. The colonizers left semblance of their own culture, and in some cases plenty of things, to people who in large parts didn't ask for them. Others embraced the modernized systems left by the colonizers. One thing is for sure though... No one wants to be told by a foreigner how to be in their own house.
The OP is misunderstanding the impact of colonialism on the colonized, the clash of cultures, of humanity versus economy, the dominant versus the dominated. The colonizers left semblance of their own culture, and in some cases plenty of things, to people who in large parts didn't ask for them. Others embraced the modernized systems left by the colonizers. One thing is for sure though... No one wants to be told by a foreigner how to be in their own house.