Another thing is the Harleys are designed for a comfortable riding position instead of one like a monkey humping a football. Sportsers even followed the design. Way back when I first started riding road bikes the Sportser was held in disdain by all the bike publication until one that was somewhat honest did a comparision on some twisty mountain road in California between it and the what was considered the ultimate bike for that type road then, the Triumph. Conclusion: One was just as capable as the other.
There are a lot of mo'cycle riders in this area because of the weather I suppose. At least 95% of them are on big Harleys. You see a Yamaha knock off of the Harley infrequently and I can't remember the last Leadwing I have seen on the road. My son is still riding his 15 year old FatBoy. It has close to 60,000 miles on it without any problems and the only reason it doesn't have more is because his shoulder gave up on him over two years ago and he hasn't been able to ride. He bought his first Harley at 19 and has had one ever since. He just had his sixty third birthday and says the FatBoy is the most comfortable of them all and it's going nowhere. He does say no more long trips on it since his new man made shoulder isn't up to the task.