People over romanticise the past and tend to forget about the negative things, children more so.
A good point (if rather sweeping) made. It is important to note that with each passing year, there is an improvement of some variety. The railways have never stood still for very long. They were initially built so that businessmen could transport their wares and have evolved from that to taking the higher classes in extreme comfort to their holidays by the sea to the people moving mass it is today.
The reason I said the statement was rather sweeping is this. Whilst the railway situation is undoubtedly much improved under privatisation through (generally) newer trains; better reliability; higher frequency etc, there are some things that BR did well that would be of great value now. One of these was Intercity and the HST. From the business plan to the train to the service on board, Intercity was the cream of what the railway could achieve. To my mind, however, this focus on Intercity came at a cost to the provincial sector. Yes, there was a large investment in the Pacer and Sprinter family, and many of these are still going strong (who knows what it would be like now without them), they were often absolutely filthy and in poor states of repair - I remember West Yorkshire Pacers being particularly bad. Privatisiation has given many of these units a new lease of life. BR days also gave passengers better opportunities for through journeys as well as providing enthusiasts with a much more varied railway.
But would I swap the Privatised world we live in today for BR? No.
There is simply too much right currently that was wrong under BR to allow a return to old ways.
Part of moving forward and modernising so that the railways remain efficient and effective in times of high demand and competition is that things like BR, the Big Four etc become history. The history of the railway is something that should be looked back at with great fondness as it produced many great things - but we should also remember that the railway of today and tomorrow will have been shaped by the lessons learnt from the mistakes of the past.