Privacy is a luxury here.
In all of the placed I have lived here there are only a few areas in the house or condo that offer privacy with a view. Meaning, I can see a nice garden view, for example, with the curtains open without people being able to look in. Even in these areas there is usually the potential for a thai to be around outside for some reason (cleaning/maintenance/security, etc) spoiling the privacy.
Another part of it is you may have a problem with thai's. It's much more annoying to have them around when you want privacy because they don't value it. Depending on where you are from, in your home country houses may be just as close, but you somehow know your neighbors know where the boundry is so you don't have a mental nag there not knowing if they will be around.