There are certain drawbacks to being a pantser. For instance, I just discovered what a total douche one of my main characters is and now I’m like, LET’S JUST SCRAP THE WHOLE THING because this isn’t working out the way I thought it would.
There are certain benefits to being a pantser. Now this character is intentionally a douche bag and there will be consequences for his actions. I don’t know what they are yet, but I look forward to seeing his comeuppance.