You're confused about what the 'fruits of colonialism' are, that's all. All these wonderful things that make modern life were not created by colonialism, were not inspired by colonialism or based on colonialism. The oppression and exploitative practices of colonialism were not instrumental in the development of science and technology. The wonderful infrastructure we have here was, admittedly, facilitated by slavery and cheap labour and yes, the enormous amount of wealth taken from these lands, but essentially, colonialism wasn't a necessary prerequisite for the development of the modern Western world. This country would be more advanced and better off today if the European travellers had chosen to share, educate inclusively instead of exploiting, oppressing, stealing and excluding. The fruits you're talking about are not the fruits of colonialism, they are the fruits of science, primarily, and it's because of colonialism that so many had no access to these fruits for so long.