Frankenstein

This would be the second time I have read Frankenstein and I would have to say it is not one of my favorite books to say the least.  For one, I don't understand why Victor had to make the creature so hideous and strong. Wouldn't he realize that it would not be a good idea to do this?  Also, I don't know why Victor would not make a companion for the monster, didn't he know that the monster would kill more of his friends and family if he didn't?  I think the consequences of making another monster would not have been as bad as Victor thought they would be.