The few times I looked at private trackers I was asked to give "donations" or no access, which to me is not a donation rather a fee. But that was years ago so it may be different now. And as I have been getting more than enough from the free open sites I use I never went near them again.
Your reasons are understandable. My feeling is just different downloading from private trackers than from the public ones, as public torrents are mostly monitored by anti-piracy outfits. Living in a country with pretty strict anti-piracy laws, I'll take private trackers over public trackers anytime.
I don't follow rules that is why I torrent in the first place, I do however give back the same if not more than I take.
Most rules on private trackers just contain the obligatory things of which a BitTorrent-savvy user knows at least 90%.
The rest is just "Follow the rules or else!!!11". As long as you are not doing something really crazy all is fine.
Never changed my torrenting habits so far - instead, I even seed more than I usually do.
The rule I meant was "sharing is caring" - not necessarily the rules of a tracker itself. They all vary, of course, but down to the core everything is the same. Some rules may be plain stupid (e.g. limiting the port range of your BT-client), most are just the usual torrenting stuff.
From what I seen most of them ask for email information, force browsers with Java script enabled and block tor and other privacy networks - maybe not all just the few I tried.
Well, of course. Accounts and such.
I do not have any idea about the Java script thing, but honestly: what websites do not have Java script these days. NoScript on and my usual suspects of private trackers still work.
Blocking Tor/VPNs is for the reason that the IP you are using is synchronized with the IP you are using with your BitTorrent-client (unless you own a seedbox). Some admins are cool with using VPNs, one might just have to tell them that they are using a VPN.
Let me cut the whole thing down - if you live in a country with lax anti-piracy laws and you are fine with getting your wanted content on public trackers, then it's cool.
I'm not the guy talking people down for using public trackers if they are happy for what they receive, and I will never be the person to look for "quality releases". I guess it comes down to the situation you are in: in what country you are living (with its laws and the enforcement), your likings ect.
Again, I'll take private trackers over public trackers due to the local anti-piracy laws I have to live with.