I have no fear of a woman going near my asshole. Let her lick it, stick it (fingers only) do whatever.
I let my other finger my asshole while she gave me head (and I liked it bitch) not to mention I think it's hot that she wants to explore me. Besides, I get to fuck her in the ass so why wouldnt she get the same respect? Sex is all about being close to the person you love for me. The stuff I sell isn't sex though, that's lust
(that's my justification in my own little head).....not to mention she stimulates the right spots when she does that, makes orgasms a lot stronger, for me at least