I'll also have a try at getting the thread back on topic...

What I like about F1 is that it's very much a multi-layered sport. What do I mean by that? Some sports are very simple and anybody can just tune in and watch at any stage and enjoy it. Some sports are incredibly complex and you really need to be a follower to 'get it', and understand the ins and outs. F1 can be both.
Anybody can simply tune in and watch a race and understand that who is 1st is 1st, and who is last is last, with the concept of pit-stops and changing tyres very easy to explain in a few seconds.
Yet the deeper you want to go with your interest, the more you can get out of it, if that's what you choose, but not to the detriment of the relatively simply concept.
If you want to go a bit more in depth you can learn about the basic concepts of KERS and DRS, as well as the different tyre compounds and engine types, inter-team battles etc.
Then if you want to go deeper still you can learn more about the technical aspects including intricate engineering and aerodynamic concepts, rules and regulations; and / or you can learn more about team personnel, their specialisms and histories etc.
When I was 5 and just wanted to watch lots of cars going fast round a track I could do that - I didn't either want to know, nor care about the technicalities. When I was 15 I was in that middle stage, whilst learning a lot about the history of the sport. When I was 25 I wanted to go further on to the last stage mentioned above.
In other words - as you grow, the sport can change in your own mind - even if it's always really been the same.
Favourite racing series: F1, Indycar, NASCAR, GP2, F3, Formula E, Trophee Andros, DTM, WTCC, BTCC, World Endurance... etc. etc.