Steven,to find active women in 40-50 often easier than in 30,not only because of more active generation,but because women who chose older men(if they really want to live with them,not just for fast profit)more calm and maybe "older" inside,who want drive prefers young man,with older men going to the theatre or watch TV,or something like that.And even more,i know 2 occasions,when younger women in such couples died earlier than theirs husband,and being young.They married these men cause they felt lack of energy,and even theirs older husband were more healthy and energetic.