I suppose that depends on his definition of "purpose." Does he ever want to have sex with you again? He may change his answer.

...You married a dimwit.

For people asking what the context this was said in, IT DOESNT MATTER!!! Sex is supposed to be pleasurable whether you are having sex cause you want to it cause you are trying to have a baby. Either way it's supposed to be fun and pleasurable so him implying that it serves no purpose regardless of what context it was said in is just plain wrong. All it shows is that he does not care about her pleasure at all and trying to justify it in some lame excuse...a male ****** isn't even need to make a baby, even if it was in the context of just having a baby it still wouldn't matter. It should be fun and pleasurable while doing so. So if that's not how he feels then I would tell him to jack off and not to finish and just save his precum and she can have a doctor use that to put in her so she can have babies. Sex and orgasms are not needed in general to procreate. Science and the Dr can help us with that...literally that is the dumbest and insensitive comment/excuse or whatever you want to call it I have ever heard...I am sorry you are with this asshole

Geez! If all he wanted was a divorce he could've asked.

Maybe you should tell him that he serves no purpose. :p