My opinion on the matter is no. Sound drivers, wireless drivers, graphics and after than just update the rest as and when you feel the need. Most drivers address mere stability issues or add compatibility. I find that new drivers clog up systems and leave relics behind and over time this all goes to make a computer slower.
Bookmark your hardware providers driver site and get them every couple of months if you must. For the 14 or so pounds it isnt going to save you all that much time. 80 devices merely is suggesting the 80 or so items in device manager. My laptop has a 7 in one card reader that appears as 7 separate items.
As I said just go for the list above and leave it at that. If you only use the PC for word and the internet, it is more important to keep on top of antivirus and spyware protection.