I am thinking about joining another site like this one, out of what is available (while remaining active here as well, but this one sets standards high so I am picky):

https://onlinegaming.directory/top-sites/all-time

https://www.virtualpetlist.com/showcase/categories/virtual-pet-games.2

https://www.virtualpet.com/vp/links/links.htm

I am looking at avoiding sites which automatically disable user accounts after some inactive period and I am unsure why some sites forbid using a proxy.

sometimes the only way to find a game worth joining is by registering there (possibly only to find it to the user's dislike and never coming back to it).

I am interested to know if you have any good and lasting experience with any free-to-play site from the three lists linked here, unless you know some more comprehensive or encompassing list than those linked here.

Thank you for the shoutout!  I'm the owner of Virtualpetlist. We also have a forum where you can discuss various virtual pet sites as well, so be sure to register and our members can help you out!