Heath the Blogless wrote, "You make it sound as though being a creationist is a bad thing."
First, we should avoid using terms like "good" and "bad," for they are quite vague and subjective. Similarly, you can't separate the belief from the believer, so calling one belief bad is the same as calling the believer bad.
With that said, I discourage anyone from believing in creationism; the scientific evidence for evolution is overwhelming. Creationists are at odds with mainstream science, and just as one might laugh at a flat-Earther, most people will find creationism laughable. Those who don't find humor in having an opinion at odds with overwhelming evidence will find creationism tragic.
The biggest problem about being a creationist is that it throws your credibility into question. Most people have little respect for those who hold opinions in contrast to overwhelming evidence and scientific consensus. Would you trust the judgment of someone who thought the Sun revolved around the Earth? Maybe, but such a belief wouldn't work in favor of the speaker.