maybe you should check ur math. u pay $13k for a busa and its worth half (5) yrs later. u pay $27k for a Harley and its worth a hell of a lot more then $13.5 (5) yrs later so yea a Harley absolutely does hold its value more over time. call it percentage or whatever you want but its a fact a Harley holds its value better then a Busa, GSXR, R1, etc....
unless were playing with monopoly money
those ARE real world dollars. better and funner to ride? I guess thats up to the person buying the bike. but as far a sport bike being better then a Harley as far as value goes its not even close. if you modify a Harley with chrome, exhaust, rake it, stretch it, etc.... you dont take the same bath you take on a sport bike when you modify it either so the Harley is still a better buy then a sport bike in that reguard as well.
but personally I didnt build my bike to sell it. in fact I dont ever see myself selling my bike. ill just keep modifying it. I cant imagine starting over with a newer generation and dumping money into it when it already makes more power then I cud ever possibly dream of using on the street.