Sex without the need for validation is the best because you KNOW that you are desirable, f*ckable, sexy, wonderfully sexual etc. before the sex even begins and so does your partner.
How do you come to KNOW that you are desirable, f*ckable, sexy, wonderfully sexual etc? If you grew up alone, in a cave, would you know this to be the case, or is it only through the feedback and admiration of the opposite sex that you come to know this? Doesn't your confidence of your desirability come from the attractions with boys that you have as a youth?
So even though you may not seek validation now, aren't you still a product of your past validation, and isn't that past validation necessary to get to the point of being a mature adult who no longer needs present day validation (if you can still follow me)?