Do You Really Want Me?

Typical situation happened today with the wife.  Guess I'm just being extremely observant because this is not the first or last time.  This morning after the kids were gone to school and daycare, she stated she wanted to have sex.  I did my usual and said no.  I walked off.  I went back to the bedroom a few minutes to ask a question and she was back asleep.  Are you serious?  Why even ask for sex if you are sleepy?  I guess she was planning on sleeping after sex anyway like she usually does so not getting any just shortened the wait time for dream land.  My main point is this - do you really want me or am I just a convenience for you?