I hope you'll reconsider your stance on Tor exit nodes; many people use the Tor network to avoid censorship or even just bolster their own privacy. Blacklisting users on the basis of their Tor usage is hostile to their goals of privacy and anti-censorship.
There's no reason Tor exit nodes need to access my home network. Zero. I do use BitTorrent but behind a VPN; this remains unaffected, though if it were I would block traffic which isn't supposed to go through Tor (since BitTorrent over Tor is not recommended).
As a rule of thumb, I will gladly pass on Tor traffic, but no exit node, and I understand if network admins want to block entry node, too. It is a decision everyone who maintains a network has to make themselves.
The reason I block it is also the same reason I block banana republics like CN and RU: these don't prosecute people who break the law with regards to hacking. Why should one accept unrestricted traffic from these?
In the end, the open internet was once a TAZ [1] and unfortunately with the commercialization of the internet together with massive changes in geopolitics the ship sailed.
