I am generally asexual when I'm in littlespace, although sometimes I will engage in naughty conversation with my daddy. In my big space I tend to respond to what my littles want, although because I am in a relationship outside of my AB life, I don't actively pursue the physically intimate aspect.
Ultimately it's up to you to make your wishes known and state that clearly/up front. I know that outside this site I've talked to at least a couple daddies who don't focus on the physically intimate aspect in ageplay, but they are for little boys
So I guess my advice is just keep looking and don't despair. There is someone for everyone, somewhere