system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How have we not run out of space for graves in cemeteries by now?
gpt
Because they haven't. Cemeteries have become more and more of a nuisance, ask any urban planer or city developer their opinions on cemeteries? Burial plots are crazy expensive (that's not even considering the cost for a funeral as whole,) are allotted only for a specific time, charges maintenance fee's. If those cost fail to get cover, they'll dig that person up just incinerate them. If they can get a fresh one in the ground they'll gig up any ol' schmo they can legally get away and put some paying customers body there. 

So just get cremated. Its cheaper and much better when the zombies come.