late night eating

can somebody explain to me why so many good takeaway joints shut early when the pubs are staying open later and later? I often arrive home at around midnight a little peckish and find my only food options are an all night mcdonalds, southern fried chicken or a kebab Why aren't those great indian and chinese takeout's open just that little bit later. Go on, give it a go, and you might find it's not just me that wants to munch down on a bhaji at midnight!