Let's just say your work a well paying job, you're well educated, and have considerable savings, but modern life has become monotonous and you simply no longer have the desire to participate in a failing culture and society.

If you wanted to abandon everything, what is the minimum amount of money you'd need to fund a basic but well provisioned mobile camp site for the foreseeable future? The climate here is temperate. Not too hot in the summer, no snow in the winter but it does get quite cold. You would obviously need a tent, sleeping bag, food, etc.

What sort of quality of life could you lead provided you'd have enough for various bits and pieces for the duration of your life?

If you want to increase the difficulty a little more, let's say you wish to do this without a motor vehicle.