Sex Amongst the Maiar (and the Other Beings in Arda)

[Legate of Amon Lanc]

Originally Posted by TheGreatElvenWarrior

That being said, I don't think that the Istari would have come to Middle-earth with sexual desires. Such desires could become a distraction from their mission, and I don't think that the Valar nor the wizards would have set out without thought for that.

No, that is exactly the point! The Wizards, and it is stated explicitly, were incarnate for a reason. They were exposed to all possible problems (and delights) mortal inhabitants of M-E could face. To put it in a more straightforward manner, it is not unimaginable for me to have a Wizard decide (Melianesque, if you find that easier to imagine with such comparison) "hey, I found a wonderful mortal woman and we fell in love and I want to spend my life with her in a cottage hidden in the mountains, screw the war with Sauron". It would not be any different from, for instance, Radagast deciding that he'd rather spend his days tramping in the wilderness.