Seems that your not a poof.
You're a pervert.
So you want to sodomise your wife - who doesn't? After all she's a very cute woman

.....
OK - beign serious - she doesn't want a cock up her arse - that's a valid point of view - after all, neither do I.
Neither do you (that I know of).
Maybe she'd be reasonable to think you were gay if you wanted her to fuck your ass. Do you?