Look bad to who? Your parents, friends, school administration, prospective employers? For someone to be a full-time student and take 50% longer to earn a BA/BS degree, that person would have either failed or withdrawn from a lot of classes and or changed their major very late in the process.
Employers don't ask how long you were in school. They only want to know when you graduated, your major, and sometimes you're GPA. How other people feel about that processes would be individual.