All the “don’ts” in the Bible are there to make all the “do’s” the ultimate source of joy, peace, rest, pleasure and contentment.
Let’s see one quick example regarding sexual fulfillment:
Do’s: “May your fountain be blessed,
and may you rejoice in the wife of your youth.
A loving doe, a graceful deer—
may her breasts satisfy you ALWAYS,
may you ever be INTOXICATED with her love.”
(Proverbs 5:18-19 – capitalization is mine)
Don’t: “You have heard that it was said, ‘You shall not commit adultery.’ But I tell you that anyone who looks at a woman lustfully has already committed adultery with her in his heart.”