Ooh oh I'll have a go!
I've watched racing basically my whole life (born in '85). F1 was the first form of racing I was introduced to when my dad would watch it.
When I was about 8, I discovered NASCAR and Indycar (or whatever it was called back then). NASCAR, I can't lie, I liked because of the crashes. I used to build 1:24 scale models, and then use a lighter to melt them and make it look like they got in huge wrecks....except my precious #3
. Indycar I liked because it was in places that I recognized (like Toronto, Vancouver) and while I never actually watched Indy Toronto, I was downtown while it was on and still remember hearing the cars.
Even back then, I remember my dad telling me "F1 is the best, because that's the way it is."
In my late teens, I stopped following most racing as I was busy with other things, plus it was just tough to follow unless you were completely into it. In 2004 and 2005, I was in Montreal for the summers, so took the opportunity to go to a GP. That's when I got back into following F1, although I ended up going to a GP only in '04, as it was actually a bit of a disappointing experience (payed a lot of money to spend all day sitting on hard ass metal bleachers, frying in the sun...watching a big screen on the other side of the track. Best part of the whole weekend was seeing the classic F1 cars, which happened to be staged right behind the bleacher I was sitting in. Got right up close to them, chatted with some of the mechanics. Sadly, that was before I fully understood what I was looking at, and I think I've since lost all the pictures I took.). The atmosphere in Mtl was pretty special though, and even friends who didn't follow racing at all, remarked on how cool all the events in the city surrounding the GP were.
Since that time, I losely followed F1 and NASCAR simply because they were the most prevelent, and therefor easy to keep track of. Living in Canada, and being an infrequent cable subscriber, following other forms of racing basically wasn't an option. If it weren't for games like Gran Turismo, I wouldn't even know about many other forms of racing.
In the last few years, I've turned into a "hardcore" Motorsports fan, for 2 reasons. One, racing games like GT. Actually getting into racing online, studying tuning guides and racecraft guides - the commonalities between the real and the virtual have really cultivated my interest in racing. Two, if the internet; specifically being able to watch replays of various races, at my convenience. I've never been one to schrdule my life around TV watching, but now that I can catch up on a weekend's worth of racing over the following week, or watch an endurance race in segments, I find myself getting really into everything. All the websites and blogs really help too.
So basically, I say all that to say that I'm an F1 fan by "default". I follow it, and considered it the pinnacle simply because I didn't know anything else. Now that I follow basically everything, and I mean everything, I become less and less impressed with F1 With each passing day. That's not to say I dislike F1, just that I don't hold it in as high a regard.
F1 lacks the wheel to wheel action, and relatability of GT and Touring Car racing, or MotoGP and WSBK. To me, it lacks the diversity of strategy, and attrition, of endurance racing. It lacks the danger of racing on gnarly tracks like The Nordeschleif, Bathurst, Le Mans, Macau, Road Atlanta, Watkins Glen, etc etc. in terms of racing that brings me to the edge of my seat, screaming in angst at the TV, yelling "Holy 🤬" when no one else is around, F1 barely cracks my top 10.
I used to consider F1 as the pinnacle because that's what everyone, including F1 itself, told me it was. Now that I have some context, I no longer feel that way. I think a lot of people hold F1 in that regard because it has the most "noise" surrounding it - but I feel it is viewed as "the best racing" for everything but the actual racing. I don't even really considered F1 drivers as the "best in the world." They're the best at their niche, which is single seater, open wheel, high downforce, on smooth tracks - but they're not the best on an oval, they're not the best on dirt/snow, they're not the best in a GT or Touring Car (eg I have a really hard time believing that any of the current crop of F1 drivers could hop in a V8SC and keep up with the pointy end of that field around Bathurst).
TLDR; F1 doesn't really offer me anything that other series don't - it's just another on the list of series to follow and watch.