A wall will perhaps make an illegal entry slightly more difficult, keep an elevated land in place (does not need to be 2 meters though), be a place to put lights, keep your privacy (I prefer plants and trees for this), keep some snakes away and possibly act as a dust filter. Apart from that I think walls are plain ugly
I may be a bit naïve
However, I believe my best insurance is our neighbors. One of them already called one night to ask if a couple she had confronted knocking at our door were, as they claimed, our friends, which they actually were. I have a low fishnet wire fence on my lot border, mostly to keep the dogs apart and short cutters off the land. I believe this fence gives my land the same legal status as a wall, I know the laws for trespassing are not the same if your land is totally open. I hear that you are more or less free to kill anyone uninvited being on your fenced in land after darkness
Everyday we have a chat with our thai neighbors over the fence, sometimes share some fruit or some garden tools. If I would put a high wall in its place I am sure our everyday encounters would cease and I am not so sure they would call the next time someone entered our land. That is, if they would even notice them on the other side of the wall. Once inside, even with a wall, you still have to trust yourself or your neighbors to fend them off and/or call the police. Walls to me are a clear marker of how you look upon the environment you have chosen to live in, including your neighbors. I also know that any thai who can afford a wall will also put one, a bit contradictory to my reasoning, I know.
Now I realize that if you have some very valuable stuff in your house you would perhaps not just trust your neighbors to wake up in the middle of the night. My suggestion would be to install an alarm system. I don’t know what they cost but a simple one with a siren e.g. should probably be cheaper than a wall. And something tells me the thieves will run even before the neighbors have gotten out of bed. Why not a live webcam uploading the events in real time and/or records stills on a web server? I played with the free yawcam.com program before. This has motion detection and other nice stuff. It works. Plan to do something funny with this on my next build.
Another funny aspect of things changing hands comes to mind. I have myself lost some items during the years. Most have later been found, openly staying with thai friends and family often visiting us. A hammer there, my gasoline lighter with a brother, Small things that seem to fall into the thai category of; “what is on the table is common property”. I don’t really have problem with this, only frustrating when you cannot find something that you think you misplaced.
So to conclude. Do I have any soul mate out there? Am I the only one with these ideas?
How many have had their place broken into? If not, you think it was because you had a wall?
Please, some comments (money can be saved=would make a good title)
MangoPin