The quality is guaranteed and the content is warez/virus free. Plus giving back is good, keeps the scene going. Honor Among Thieves, basically...!
These days I wouldn't be too sure about that.
as people who upload stuff on IPT or any other trackers do it for the upload amount gained,
they'd source it from some other website and upload it as long as the content is big and there are enough leechers to get on it .
there is absolutely no checking if the stuff is malicious or in best case scenario a mere dud.
the only way you know a torrent is good is after at least a week, when you read the comments.
So as long as you are handling 0-day stuff, you've got to be a little cautious.
even a well known antivirus or firewall won't work on 0-day stuff.
But on the other hand I find p2p forums or p2p niche trackers to be a bit more reliable
trackers like Kickass.to and thepiratebay (verified uploads, verified uploader with many uploads)
bestrepack.net, rg-mechanics.3dn.ru have reliable stuff,
I know how this sounds, public tracker and safety are not 3 words used in same phrase often.
But the trick is identifying the Trusted or verified uploaders. it is as simple as that.
About the content retention.
while its true that a torrent would live longer in a private tracker,
its also true people upload the same stuff again and again in public trackers as there is no restriction.
so chances are that stuff uploaded in 2003 in IPT has 0 seeders,
while it was re-upped in TPB or KIckass 4 months ago by someone or the other just for the lulz.
I should know.
I have a humongous buffer in IPT , TL, BCG, Bitgamer(RIP), Comicbt, PTP, AHD and you name it.....
but i've left them all in favor of the public trackers.
latest game rips with all dlc and updates they have it, obscure books and comics they have it.
and they aren't hammering me or blackmailing me for my money every day lol. (Reference to IPT and TL)