Controversial, this is because not everyone agrees that they make excellent pets
Lord and Lady Capulet both have strong emotional reactions to Juliet's refusal to marry Parris. When Juliet gives her answer, Lord Capulet gives her an ultimatum: marry Parris or he'll disown her. Lord Capulet does not have a rational conversation or hear Juliet's concerns. Lady Capulet also reacts emotionally when she refuses to listen to her daughter as well.
“They tied me up, then, plumb / amidships, back to the mast, lashed to the mast, / and took themselves again to rowing.”
To confirm his high opinion of the woman ,speaker supplies - no evidence at all.
