Does anyone know....??

Does anyone know why when things appear to be improving they will suddenly crash? Or, why the light at the end of the tunnel invariably becomes an optical illusion? It seems that every time I get close to something job wise, it gets snatched away or moved further with more hoops to jump through before I get an answer. I'm all for making sure you are hiring the right person - one who is qualified and will be able to do the job - however, when it seems to take forever, that is a bit of overkill. Why have people in for second interviews AFTER sending them to HR to discuss benefits? When did this begin to be the norm? I really don't care about the benefits until after I get the job. I mean, I certainly want health insurance and such, but I really don't need to know about it until after I am hired. At this point, I am focused more on the job and how I can be productive in it. Let me start working and then we can talk about benefits.