Okay- I can agree with you when I think about it this way.
There are some basic segments of human life. Some of those segments are:
Gifts and Talents
So- for every human being- these are life segments that can be developed if you choose to. Every human being can choose to delve into any of these areas.....all of the areas....or none of the areas.
so- an asexual person is someone who simply doesn't want to delve into their own sexuality.
In my fluid poly life, I am currently the leg of 2 Vís and the point in 2 Triads.