Big as in “big dick” or big as in “big body frame”? Either/or it doesn’t matter, the answer is the same for both.
I guess once more it all comes down to conditioning. Some men are just plain shallow, some men are just plain insecure, some men are just genuinely turned on by a big dick. We CAN’T force attraction onto people, it’s either there or it’s not. We CAN try to effect change on terms of what kind of conditioning people receive for the future.