Man of Honour
I'm not sure what hardware was around at the time I'd pick (I'd guess the first dual core Athlon CPUs), but towards the end of the time when actually "being online" was a thing. You had to actually actively go online and sit at a terminal, no Facebook or whatsapp, only MSN Messenger (RIP) and Myspace (Not so RIP...). There was something more immersive about the internet back then. Now it's so ingrained in everyday life that I don't ever truly feel offline, therefore I can't ever truly feel online. When I think about it, when I joined here in Jan 2006, that was the time.