We can have 100% renewable energy, electric cars, carbon neutral buildings, etc. within the forseeable future, but we will still need to build more homes, schools, hospitals etc. and to do that we need steel, timber, concrete, etc. We need more food, water supply etc, and the resources and transport that provide that. This is my gripe with the likes of Extinction Rebellion...unless they have answers to how you sustain the current and still growing population of the planet, without causing more harm to the planet (and they don't), then its a bit pointless just moaning and protesting about it.