there is a big difference between horoscopes and actual astrology. People believe different things about each but a horoscope only considers your sun sign while astrology as a whole would address your entire chart.
I watched a documentary regarding horoscopes once (wish I could remember the name of it but it was way too many years ago) where an “expert” of some sort debunked the whole horoscope thing – he asked each person in a classroom what their sun sign was and then provided them with a horoscope in a sealed envelope that he told them was their personal horoscope – after they read it, he did a poll to see whether they thought their horoscopes “mostly” fit them or not. Most of the class raised their hands in agreement that the horoscope matched their personality & views – he then revealed that in fact he had given them all the same exact horoscope and had chosen phrases that all people would connect with as good advice or positive traits about themselves.
With the deeper and more detailed aspects of astrology (though the science is heavily contested & controversial & many consider it unproven) it is linked or believed by many that the position of various planetary bodies actually affects the ionic charges of things on earth in a way that “programs” them on some level or another & according to astrologist the position of each planetary body, what house of your chart it is in etc. affects what your tendencies, actions, responses, views etc are in various life scenarios.
I’m not sure myself about the reality of the alleged science behind astrology, but I can say that having discussions with an astrologer about my personal chart did give me insight into myself in a way that helped me grow and make better decisions in life. Who knows if it was just because I got some cookie cutter phrases that would prompt thought in any average person or if it really was accurate but I figure who cares – my life is better. Heck – my life is better because of things preachers have told me but that doesn’t mean I believe in Christianity – I just simply believe in self-improvement I suppose LOL.
It probably comes down to what @glenjamin said which is if you believe it has significance then it does