>>13419As I said in my previous post, there are many options for survival.
Not to mention what you say it's simply false ,the available land on Earth could fit around twice the humans, the problem is that it seems very crowded because we tend to group in specific small parts such as cities.
I also wouldn't worry about the resorces ,(with the exceptions of minerals which we can extract from space),as this worry has been since the 1700 with the same ""apocalyptic"" deductions.But in reality as we are more we are able to produce more and to develop technology which can give us more resources.
For me I think space colonization is the way.