From the point of view of older men there is no problem. But as the age grows, the men cannot satify the women who are still younger as much as when they were below 58 or so and then it is frustrating for the women. Whereas if the age difference is not much, men can satisfy them almost till their menopause.
If a young woman wants to get pension benefits of old widower then she can try. Otherwise an intelligent and wise woman can get what she wants from her equal age partner also.