Different doesn't always mean bad. People conform because they see no other alternative that will benefit them in a greater manner.
There are many advantages and disadvantages but the ones I might know are:
Advantages: Thinking outside the box, realizing your strong character, showing your creativity by doing what is not necessarily asked by you, opening the minds of others, having few friends but they're all "real"
Disadvantages: Being shunned/resented, having to work harder than everyone else to achieve a self-realization, being potentially lonely, rarely being able to share your thoughts and people trying to coerce you to conform to society because of their ignorance.