I have no intention of selling the OP on NASCAR; it’s just another sport, and like most sports, either one gets it or one doesn’t. I’ll just discuss why I happen to like it.
The usual knock on NASCAR is the preponderance of events on oval tracks, but this is perfectly true to its roots in local Saturday-night racing on quarter-mile ovals (many of which remain unpaved), and while the largest number of races during the season are on 1.5-mile D-shaped courses, there are large variations in track configuration, from 0.5 mile bullrings like Bristol and Martinsville up the 2-5-mile high-banked monsters of Daytona and Talladega.
Things I like about NASCAR’S events are the use of full-bodied cars (although I’d frankly prefer to see something like an American version of the European Touring Car Championship), the subtle strategies involved in race management (when to pit, two tires or four, give up track position for a splash of fuel near the end or try to reach the finish without running dry) and the relatively engaging personalities of the drivers and crew chiefs. And yeah, some of the crashes are pretty spectacular.
Yes, some races can be boring, especially in the middle sections, and often on the 1.5 mile and larger ovals only the last fifty laps or so really mean anything. I cannot, however, consider the motorized Ben-Hur style chariot races that occur at Bristol, nor the 200MPH traffic jams at Daytona and Talledega, to be truly boring, in most cases. Likewise, I still find the most boring NASCAR event much less stupefyingly tedious than most F1 events, where (whether true or not) I have the impression that one car pretty much runs away from the field from the start and only gets passed if it breaks down or crashes. I personally would be in favor of NASCAR going to fewer 500-mile, 4 1/2 hour events, maybe to a 300-mile or timed two-hour format, and there has been much discussion along those lines in the past couple of years.
Lastly, from a personal viewpoint a major attraction is that I play in an on-line fantasy NASCAR league, and so there is an added incentive to cheer on drivers who I’ve selected for my fantasy team in each race.
Now, can or should someone who has no knowledge of the history of this particular racing series, has no familiarity with the drivers, and is highly unlikely to be able to see an actual race, become personally invested in following the series? I’d say don’t worry much about it.