There are still some uncontacted tribes leading this kind of lifestyle. Why don't you try to join them? Or is that kind of life just for dark-skinned people? A little like how middle-class white eco campaigners who have benefitted from industrialization want to deny the same to Africa and the rest of the world?
Also, when do you think European colonization began? Did the Aztecs begin their brutal colonizations and empire building before or after Europeans contacted the Americas? And if you're talking about modern colonialism, the Arabs and Mongols and many others were engaging in it in the most brutal way possible hundreds of years earlier. It's the way of the world. Europeans invented the idea that colonialization, slavery, 'racism', and all the rest were wrong. If the Arabs, Ottomans, or Mongols had industrialized first, the world today would probably be 1,000 times worse.
And what harm has the nuclear bomb brought, aside from Hiroshima and Nagasaki? It's almost certainly prevented tens of millions of deaths in wars that would otherwise have been fought, including just last week in India and Pakistan. Hardly outweighs the thousands of benefits that European civilization has brought to the world, including your freedom to express your hate for your own culture on the Internet.