As a devout Christian, I believe there are spiritual entities that affect our tangible world in good and bad ways. Interestingly enough, I also believe in science. I'm one of those people who believes in the Big Bang Theory, but that God created the Big Bang. I believe in evolution, but that man was separate from all those monkeys. Yeah! Think about it!
So, you ask whether I believe in Astrology. Yes, there is some insight and uncanny truth to some of what it accomplished in the categories and generalizations in this demiscience. However, I think a lot of what we find in common is really formative in utero. USA speaking, perhaps those conceived on Valentines Day are in utero during hot months and are born just as the weather gets cold. Does that make the Scorpio passionate? I dunno.
Remember, depending on where you are on the planet, you have a different cosmic pull, weather conditions, etc. However, the ancient Egyptians, Mayans, and Incans knew something about the heavenlies that is a mystery to us now.
As a caveat, today's practitioners (with RARE exception) are fakers, charlatans, entertainers, generalists. Don't believe a thing you read. They're just lucky guessers! And CERTAINLY don't make decisions based on this "info".