I've been watching F1 since Monaco 1970 (Where I fell in love with the sport and became a fan of a certain Mr Rindt)
I'd love to calculate how many I've seen but I'm too lazy to figure it out. From my beginnings in 70 we only got 'highlights' so I'm not sure if you can count the first few races or season or two. but I've pretty much watched every race since (missed two in 2001 but I was in hospital and unconscious so not my fault for missing them)