The reason why parents object is that they don't like him and think he is not suitable for marriage and life.
The logic is probably: unreliable/poor material foundation/not worthy of my daughter → unable to get married → don't waste time and break up quickly.
Parents are more interested in whether this man can provide security for your future and lead a stable life, rather than his appearance, conversation, speaking ability and emotional value.
But many times I have to admit that ginger is still old and spicy. Compared with young girls, people who eat a lot of salt have developed a pair of critical eyes, which can tell whether this man is your "good object".
There are many women who, regardless of their parents' opposition, stay with the man they love, complaining bitterly about love rat who has no conscience and telling stories of her disappointment.
In case such a bad thing happens, you can only bear the consequences yourself.