True. We don't need roofs with gardens all the time. But urban planning needs to account for more green space. Of course we need to fix and leave more wild habitat to stay wild, but we also need to create more spaces for the wildlife to roam free. For example my city is packed on one side being the coastline and the other being a massive freeway. We have a lot of green space but not enough places for the wildlife to cross. We need to allow for that. An interconnected "freeway" and "city" system for wildlife made up of ecological reserves and green highways.