GMod will die some day, but it's going to take a while for it to die. The game has been a live for 9 years, almost 10 years. If Garry's Mod does die, something had hit it hard, like and unwanted update or a mass of hackers of increases in the community etc. Garry's Mod started my PC gaming life. Would be sad for it to die out. But it's normal can't complain. It does get boring for playing the same game for months, even years (me).