'Fiend' Wasn't Bad Since The Beginning

The story told by a "Monster" about his "friendly cottagers" reveals that the creature was seeking meaningful relationships even since it first learned to discernment all five sences. This isn't only a proof that Victor's 'Monster' was kind deep in heart, but can even be a great model of how we grow and newborn develops.

What caused creature's isolation and then transformation?

Difference is the only answer. He was eight feets tall, odd and new for this planet , of course this made him frightening for all human beings, even for the young girl's father who attacked his doughter's saviour.