I have one that from the day they were born wishes I did not do daycare. Telling them that they would have to go to one if I worked didn't seem to bother them as they had never done it any other way.
They are way older now (HS) and still, still wishes that I didn't do childcare. My very oldest one doesn't really want children.
They have said they have been around kids long enough, not keen on making it a lifetime.
So really watch him for a few months more and if it doesn't improve maybe he's just not able to have kids constently in his environment in his own home.