This will sound harsh. It is harsh.
Purple: The emotion you are expressing is pathetic. Your daughter is happy to marry this person. It has nothing to do with you. You do not “get” a son-in-law; anything you get out of this is entirely incidental.
If you do not like your new son-in-law, that is too bad on you. If you ever say or imply anything negative about him to your daughter, you will be doing something very wrong.
Really, I think you need to change your attitude about this.