I don't mean to be condescending, but it rather seems like you haven't learnt how to cook. In my home, we have the culture of simply cooking our own meals since

I don't mean to be condescending, but it rather seems like you haven't learnt how to cook. In my home, we have the culture of simply cooking our own meals since it's much cheaper than eating out. Generally, one meal (one pack of meat) will last us (me and my wife) for 3-4 lunches. Nothing gets wasted, everything gets eaten. There are no 'leftovers', we cook simply for multiple portions. Sounds to me like you need to learn to cook in bulk; your unhappiness simply sounds like lack of cooking experience.