Is it normal that a mature woman suddenly desires anal sex and sperm

I have posted that I don't wear knickers. I just love it when my man opens his trousers, presents his cock for my mouth to make it wet, then pushes me over the sofa and lifts my dress and thrusts his wet cock into my arse and fucks me hard. I love the feeling of his spunk filling my arse. Is that normal? I couldn't find a photo with his spunk dripping out of my arse, hope this is a poor substitute.