It’s important to have a well defined purpose for designing a logo, because this tells us what’s important and what is the criteria. For a logo design to have a distinct identification and a unique appearance that makes it apart from the crowd it’s important to design a logo with a specific purpose.
Logo Design means that to convey a message . So make lots of rough sketches. A good logo should be simple, memorable, unique, timeless, and appropriate.
Yes, knowing the purpose of your logo is very important so that you will not end up with an ineffective logo that will only confuse your target audience.