I bought my '75 750F on the Fourth of July, 1977. It had 3500 miles on it. The guy I bought it from didn't have a garage, so he kept it in his living room. He had a ramp he would set up to get it up and down the front steps. I've joked before that it was the cleanest thing in his house. And that is no reflection on his housekeeping, because the bike was spotless. I had just sold my '64 DuoGlide dresser(wish I had it now), and after 3 years with that Harley, the 750 was a revelation. I remember my test ride on the 750 like it was last week.
I could tell a lot of stories about that bike, but I'll spare you all. As I've mentioned in other posts, it is still going strong with a fair amount of miles on it, and doesn't act like it is going to wear out. I've had a lot of good bikes that have come and gone over the years (I still have 3 others), but I still have the 750 and ride it almost every day.