There's a herding effect with torrents where popular things are quick to get, unpopular things may be very difficult to get, because the majority of users delete files to save space.

I might host 3 or 4 models that I've downloaded recently, but I won't be hosting the 50 or so that I've tried in the last two years.

And who seeds it? If you're going to pay a host to seed it, they might as well just provide HTTP and let you add them as a web seed to your torrent, which we could be doing already.

But if you don't pay a host to seed it, either the host's business model won't play well with torrents, or there's no host and a torrent will rot.

Torrents are unreliable, also for an agent or script it's easier to just do wget model