A few of us stopped played DayZ because of the previous alpha patch as it had some game breaking graphical bugs. Plus the fact that after playing anything for over 300 hours in a few months you might burn out on it. That gave me the opportunity to learn the base game and I'm finding I like it just as much, if not more.
It's not for everyone, if you just want an arcade shoot-em up then this isn't for you but if you have patience, can handle a steep learning curve and enjoy military sims, it's a blast.
Honestly, Arma and DayZ is the most fun I've had with a video game in over six years. Maybe longer. Wish I'd found it sooner.