Why should you do or say or be or wear or play whatever sexual or sensual or erotic or affectionate thing or activity or role you husband wants with or from or on you? At least some if not most of the time:
Because you are his wife.
Because you are supposed to be his lover.
Because it makes him feel good and because it feels good, emotionally, that you are doing it – hopefully with enthusiasm and not grudgingly.
Because he wants it and wants it from and with or on you.
Because it’s exciting, playful, erotic, and bonding for him.
Because he wants and needs to be wanted by you.
Because it’s exciting, playful, erotic, and bonding for you.
Because it’s exciting, playful, erotic, and bonding for your relationship/ marriage.
Because it shows you love him and want to please him.
Because it’s giving. Giving begets kindness which begets giving. Constant refusal begets bitterness and resentment which begets refusal which always ends up with two unhappy people (and unhappy children) and, usually, will end up in divorce.
Because, selfishly, it will make him want to please you even more.
Because it shows you are attracted, physically and sexually, to him. He wants and needs to feel attractive to you.
Because you love him.