While I have only the vaguest memories of playing Guild Wars, it was one of the rare few MMORPGs to grab hold of me and obliterate whole summers. What I do recall is a general feeling of nostalgia, though I'm sure it would be tough for me to go back in this day and age. For those of you who didn't permanently leave the game, rest easy knowing you're in good hands.
On the subject of whether or not ArenaNet will shut down the game's servers, a move that would be disappointing but far from unheard of, lead content designer Mike Zadorojny told Eurogamer "Oh absolutely not. The game itself was so efficient on the server side in terms of the resources, like, it runs on a fraction of the hardware that we need for running Guild Wars 2, so having that on the back-burner is nothing compared to GW2."
"There's still a community there that's really passionate and really thriving in there, so we want to support them as best we can," he continued. "We've been doing a lot of automation support so that the game itself could last forever, even without anybody really touching it. They're not necessarily making new content right now but there is a team that is monitoring if there are massive issues they're taken care of, and they're supporting them." These guys right here.
ArenaNet: Guild Wars 1 "could last forever" [Eurogamer]