If you haven't already read it I highly recommend "The Poor Had No Lawyers" by Andy Wightman [1]. It can be a struggle to convince people to read a book on the history of Scots property law but it is a really fantastic book. Manages to balance detail without ending up stultified and provides a lot of context behind the current state of land reform in Scotland.

[1] http://www.amazon.co.uk/The-Poor-Had-No-Lawyers/dp/178027114...

I don't think it's quite true to say there are no trespass laws in Scotland - there is still laws against aggravated and collective trespass and there is a rather long list of laws governing access to other peoples land.

However, the general rule is that we do have a "right to roam" with the condition that people accessing land are sensible about it:

http://www.outdooraccess-scotland.com/

Land ownership in Scotland is incredibly complex - I can recommend the book "The Poor Had No Lawyers: Who Owns Scotland and How They Got it":

http://www.amazon.co.uk/The-Poor-Had-No-Lawyers/dp/178027114...

"If you can use violence to take away my access to land"

Of course there are countries, including parts of the UK, where you have a right to go pretty much where you want in terms of access to land (with some sensible restrictions - powered vehicles etc.) and civilization doesn't seem to have ended.

NB For a fascinating account of the extremely dubious history of land ownership in Scotland I can recommend "The Poor Had no Lawyers: Who Owns Scotland and How They Got it":

http://www.amazon.co.uk/The-Poor-Had-No-Lawyers/dp/178027114...