The majority of what I would call mature women prefer their men to be masculine, i.e., big and strong. For more years than many of you have been around I have dated mature women, e.g., 30's on in age. Now to be certain, women are just as different as men when it comes to their "taste" in the opposite sex and the facts of life also show that money and the promise of a certain "lifestyle" it can afford is also a big factor in dating.
But ask yourself this when a woman says she doesn't care what a man "looks like" and that "looks don't mean a thing". What's the first thing we, as a species, notice about someone?
Their looks.
A good body may not say everything but it is as powerful a lure as any that you can drop in the water. If what's behind the "lure" is worthless, i.e., the typical drugged up bodybuilder whose only job is at a gas station or worse, then you're likely to never see here again but if you've got plans for a real life and can be seen as working successfully toward them your chances of dating that woman (and others) just went up.
Big muscles are not "worthless" but unless there's more than meets the eye of a woman you're interested in, they're most definitely not worth more.