Obviously having an opposing opinion and view point attracts insults.
Let me try and expand on my lack of grasp of the point to try and explain more clearly.
My example uses the metropolitan Birmingham area, and more specifically focuses on the Cross City line (although the same logic could be applied to the Wolverhampton, Walsall and Coventry local services).
For the avoidance of doubt, and to nip in the bud this engineering bit - I get that "small-scale" work and line closures are a necessity overnight.
Now to my point: In Birmingham, other than to Birmingham Airport, there are no 24 hour bus services. A train scheduled to run say - Four Oaks to Longbridge via Birmingham New Street hourly throughout the night, once an hour, would be providing a service that I envisage would be popular given the number of night workers, let alone revellers in the City Centre.
If engineering work is taking place at any point, the service would be curtailed and replaced with bustitution. Regardless whether this bustitution was a regular occurrence or not, it would be a public service that currently doesn't exist.
Now my point was, and still is this: I often finish work after the last buses and trains of the day. It is excruciatingly expensive to get home using taxi's. I would welcome a 24 hour service on the Cross City line, even if I ended up on a bus, because at least there would be a service, where currently there is none at all.