That's like saying you have a fetish for vanilla sex with attractive women.

vanilla sex with attractive YOUNG women, please...

That illustrates my point - what you find attractive is young women, just like almost every other post-pubescent male. The term "MILF" is entirely subjective - it only applies when the, shall I say, viewer is a certain age and the woman in question is his mother's age. MILFs are a safe way to indulge an Oedipal fantasy. Period. No other contexts make sense. So, unless you're an infant, you can't say you like your MILFs to be 21.
I believe the term we're really looking for is "Mature" and it easily applies to Monica, though her butt could be bigger and her hips wider.

Sorry for not keeping track of this topic.

I assumed that it was given that I thought of a woman around 40 when I mentioned her "legal" daughter.

...and I found Mrs Robinsson way more interesting than her daughter when I watched the movie in my early teens - there was something delightfully dangerous and naughty about her