Not all wives are as supportive and caring toward their husbands as you are. Some husbands work extremely hard all day, only to come home and find that there isn't even a meal prepared for them. Your husband is truly fortunate to have you because you always take the initiative to prepare food and snacks for him.
Actually, both of you are fortunate to have each other. He works incredibly hard to provide for his family, even under the scorching heat, and you show your love and support through the care you give him every day.
I completely agree with you when you say that even a machine needs rest. That's absolutely true, if something is overused, it will wear out and break down much sooner.