Point taken
But Tom Bombadil was not a hobbit, was he? (hush, I don't intend this thread to become another TB battlefield...)
Besides, this sentence of 'being absurd', applies to Beren/Luthien, Tuor/Idril and Aragorn/Arwen marriages in a way. For what are hobbits? Mortals, i.e., men. And what are fairies? elves, i.e. immortals. Apart from those specially [Eru] granted unions, the notion
is absurd.