Question about legal recording

If it illegal to make a copy of a DVD why is it not just illegal to record the same movie on TV?

Bright idea gentleman…would like to congratulate you but not that original.
Our beloved broadcasters are already atempting to introduce that practice, and most likely they will push it further on digital TV.
So, you will be happy and can throw away your digital home recorder that you bought because you could fill the gigabytes of your HDD with TV shows…you will probably have to pay to call the night news again when you arrive home after the hour…and remember the times you could just record in on VHS tape with no problem…but you will be happy!!!
…or you just asked the question the wrong way…

In many countries it is not illegal to make a back-up copy of a dvd that you’ve bought.