Jumping To Conclusions

"I had been accustomed, during the night, to steal a part of their store for my own consumption; but when I found that in doing this I inflicted pain on the cottagers, I abstained" - pg. 78

Frankenstein seems to think the creature he created is inherently evil. I don't really understand this concept. I know the creature reached out for Victor right after he was created, but he has never done anything else to harm Victor. I think Victor is too focused on the grotesque appearance of the creature. Frankenstein knows that he created the creature, so he knows that he didn't do anything to make it a killing machine or anything like that. Does he just assume that this creature is going on a killing spree? Also, why didn't he care about any of this in the 2 years that the creature was trying to stay alive in a forest? Jumping to conclusions could get Frankenstein into trouble in the future. I think that he should continue listening to the creature's story and ask a few questions to understand what's happening. It's not like Victor is very emotionally stable as it is. I think he's at fault somewhat for not being open minded about what he created.