These days, a business logo takes days/weeks/months before the final image is decided on. It represents many things about the company, from its colors, to its shape, to any intricacies within the logo. Rather than being just another pretty image, logos are meant to convey a message, even if that message isn’t always immediately understood by the eyes that are looking at it.
I’ll give you a couple quick examples!
First, look at the FedEx logo:

Nothing special, right?