ItcheSrulik: And you would be a rasha to marry your daughter to an abusive 18 year old. Don’t mix that up with age. Marrying your daughter to a normal 18 year old or a normal 65 year old has the same halachic status with neither one being inherently wrong.
mdd: Can you please summarize what Even HaEzer says on it? Does it specify ages? Otherwise, what are the ages that are considered wrong, according to S”A?