If WoW was F2P I would play it again. I feel like people get addicted to games like these when they have to pay: There's a certain time-sensitive 'I GOTTA GET THIS SH* BEFORE THE MONTH RUNS OUT'. The time you seem people 'getting hooked again' is when expansions come out. I played trial-vanilla, trial-Burning Crusade, the free-trial for Wrath of Lich King, and that was the extent.
I have Guild wars too, and I'm in no rush to play through it since there's no subscription. Since, TF2 went free I've only played about 3 hours, not including (dirty,dirty)idling.
I have Guild wars too, and I'm in no rush to play through it since there's no subscription. Since, TF2 went free I've only played about 3 hours, not including (dirty,dirty)idling.