Cheers for the come back.Hi!
Well, imo.. it's pretty useless. If you try to sell it to an end-user, then I think there's no need to do that.
An end-user is someone that has a specific idea/project as to what he is gonna build with the domain.
If you had many domains in different niches, that'd be very difficult to set up small websites on each domain. That'd also take too much time.
Nobody does that.
Good luck, btw!