LG, this thread of yours has numbed me completely. Never in a million years would I have suspected that you actually believe this stuff is real.
You should read more carefully what Lightgigantic has said so far in this thread:
basically astrology can offer an insight as to how karma is affecting one and how it plays a part in understanding how one "acts" in a particular environment - of course ultimately karma has nothing to do with the spirit soul, so even a fully accurate insight in such plays of karma can not ultimately enable one to transcend karma
Traditionally people called upon astrologers to help them assess their material situation - like how determining who is the partner of their dreams (or alternatively, nightmares), understanding what vocation one is more suited to etc etc. If one chanced upon a good astrologer they also might get clues about what fortune and mishaps they can expect in life. Basically to visit an astrologer was to gain an insight into one's karma "blue print" ... but after all is said and done, everyone's karma brings one to the point of death and no one's karma prevents them from applying themselves to spiritual life, so astrology does not represent the highest discipline of vedic literature (although it may assist one in developing the earnestness to apply themselves to spiritual culture, since it at least clearly recognizes that there is a power higher than one's self)
In short, Vedic astrology has to do with karma. But karma isn't the only active force in a person's life (as you have hopefully learned by now from your extensive exchanges with Lightgigantic), hence astrological readings cannot always be accurate and are meant to cover only some aspects of a person's life.
Secondly, as for your skepticism about astrological readings being too general, quite likely applicable to large numbers of people and therefore not believeable: This is indicative of an everyday fact: Many - if not most - people are not all that special. Many - if not most - people live their lives almost as if they lived by a script. They have schedules, routines, constraints and they live within them. There are many types of those schedules, routines, constraints, but within the same type, people are much alike. If that wouldn't be so, companies and organizations could not hire new workers and members to fill in when the older ones retire, for example. One middleclass housewife can go to live in another middleclass housewife's house, and with some little adjustments, or not even that, fit right in. And so on. For the most part, people are exchangeable.
Many of us would like to think we are so special and unique that little or nothing about us or our lives can be accurately predicted by astrological maps. But we're not that special ...
Aside from that - in some respects, however, we appreciate to fit into types and things about us can be accurately predicted: medicine is the prime example. Do you know anyone who frets because their body is too much like anatomy maps say human bodies are? No, we're very eager to fit in with particular medical notions of what constitutes "healthy" and "normal" - on the whole, this is much better for us than to be "special" with all those extra livers, absent feet and tumors and such.