it would depend on the circumstances. are you healthy? physically fit? you don't say why. are you in love with a younger man, who never had children, and this is the "deal breaker"? if that is the case, then . no. do not have a child, in order to keep a man. if you and he are in love, either way, children or not, and choose to have a child, and you are up for it, physically and mentally, fine.
if you bear him a child becuase that is the "deal breaker" (he wants to have children) then really, really think this through. the pto meetings, the soccer games, the baseball games, the dance lessons, not just a cute little baby, but all the "raising" of a child entails. the 15 year old, with all her temper tantrums, , as you are going through menopause.... think this through.... . a child should be conceived becuase this child is WANTED, for 18 years (at least). a child is not a bargaining chip in a realtionship.
if you really want a child , then , if you're doctor says ok, then God bless you.