I don't put much bearing on star signs, but I think that maybe some people forget that it does have some significance on what time of year you were born, what time of year you were conceived; the weather at that time of year, and other factors.
I was born in the southern hemisphere, in the tropics...I don't know if that has much bearing on what sort of person I am, but it seems like I have some similarities to the Virgo 'type'.....but as I said, rocks in space probably have little bearing on what someone is like.