I voted "Yes" and there is a couple of good reasons why.
Firstly, they are great to drive - both on ovals and road courses. I like racing them at Motegi Speedway as well as on the Nordschleife.
Secondly, have you ever selected "Daytona" when you were searching for an online lobby? There are a lot of lobbies just about NASCAR - both dirty and clean. Both versions are fun, I prefer the dirty rooms. Dirty NASCAR is massive fun and hugely addictive.
I think that many people on here are asking for too many NASCAR tracks, though. I mean Talladega, Bristol, Martinsville, Sonoma, The Glen, Richmond, Road America, Michigan, Phoenix, Montréal, Dover, Texas... Really? I do agree that having more of these tracks would be great, but Bristol or Martinsville, Texas, Sonoma, The Glen and Montréal would be enough. I am 100% sure that Sonoma, Watkins Glen and Montréal are going to be used by many other things than NASCAR. One particular track I would like to see is Sebring, though. Then implement the 12h race as an endurance race and I will be happy.
Something else I'd like to see is a format they're doing in ALMS and Grand Am. A 2 hour race with 2 classes. But that is just wishful thinking I guess.