> There's lot of annoying things that make it harder to admin for.

It also (AIUI) tries to walk the entire file tree, so have fun with NFS (auto)mounts.

It also amounts to letting off fork bombs: we set up limits for a maximum of 256 process per UID, and regularly get folks asking "what does this 'cannot fork' message mean?": it mean you're trying to DoS the system.