Fucking hell, that thread speaks exactly on what I think.
An example is myself: My girlfriend is in the UK and we love one another very much. We want to live together and all that typical romantic stuff. It's so intense that it can convince me at times, but I have to battle with my own naivety to accept that *anything* could happen and to prepare for any unforseen consequences. Shit can and will happen sooner or later.
However, I have realised that despite my intense dislike of such naivety, it is naivety itself that will make these people learn about the intolerance of life. They will learn it in some form sooner or later - the hard way. Some will survive from it, some will die. Due to this, I decided to leave them be and worry about my own life instead.