I'm not sure I've ever heard of a wife picking clothes her husband, if by 'picking' you mean selecting them out of his closet/wardrobe/drawers and laying them out for him. With that said, if you have been doing it for 10 years, he is bound to be miffed when you say you aren't going to do it any more. The fact is, he should never have expected you to do it for him, but you have enabled him by doing it for so long.
He sounds quite childish, and it sounds like the way you communicate with each other needs some serious work. Myself and my wife(we have also been married 10 years) used to have this 'who does what' problem, and the way we solved it was simply by allocating certain roles to ourselves, split as evenly as possible. If one of us wants help, or wants the other to take it over, we just ask nicely. Simple as that.
I think there are maybe some deeper issues with your marriage here, and they are manifesting themselves with this task bickering.
He sounds quite childish, and it sounds like the way you communicate with each other needs some serious work. Myself and my wife(we have also been married 10 years) used to have this 'who does what' problem, and the way we solved it was simply by allocating certain roles to ourselves, split as evenly as possible. If one of us wants help, or wants the other to take it over, we just ask nicely. Simple as that.
I think there are maybe some deeper issues with your marriage here, and they are manifesting themselves with this task bickering.