I've noticed a lowest common denominator here in past reviews. People watched this with the automatic assumption that this was going to be a full-blown, slapstick 'Comedy.' Nothing could be further from the truth, as this isn't the story being told.
Had this been made today, it would be considered a 'Dramedy.' It's not story-driven enough to be a full-fledged drama, and it's not sophomoric enough to be a comedy. It lies somewhere in between, and that's not entirely a bad thing. The collapse of Duffy's marriage to Meg is realistic enough. They cannot conceive a child, which Duffy clearly feels he needs at this point in his life. He keeps pushing this with Meg, and what do you think happens? Of course she's going to feel pressure, especially when she's just been handed her dream job. We never really see 'all' of the events leading to their divorce, but this was clearly an event in the making.
What follows is what any person would do following the demise of a long-term marriage/relationship. You go out and try and find someone else in order to start again, if anything to prove that the original break-up wasn't entirely your fault. But regrettably, as Duffy finds out, this doesn't always work either. He tries for someone younger (Masterson), but it becomes frighteningly apparent that perhaps it wasn't Meg or Daphne with the conception issues, but Duffy himself.
On a side-note, Duffy's a bit of a hypocrite when it comes to relationships, as he lambastes his own father who decides not long after his wife's death, to get married again. Duffy has no problem moving on from Meg, but has distinct thoughts of how his father's life should progress. I do find a particular scene at his mother's funeral to be incredibly touching. A child runs past Duffy, crying. He picks up the child to reassure him/her that everything is going to be all right, and despite his earlier braggadocio with his father, he completely breaks down at his culminated losses. (Namely the loss of his mother and the acceptance of the fact that he and Meg will never have a child.) Is this one of the classics of all time? No. The ending, as referenced elsewhere, is extremely rushed and a little too clinically 'nice' for me. Should scenes have been deleted? Yes. Namely the ice diaper and Duffy donating sperm scene. This two different films squished together, by Leonard Nimoy. Neither of which would've probably been good on their own merits, but together, they try their best to tell a story about flawed individuals. It's about a four out of ten.
It's not as bad as other people have made it out to be.