If you have a chest route, material acquisition is a breeze. I have one for the cosmodrome and venus. And i would rather be doing public events, bounties, and killing enemies when they swarm with friends, than deal with the lag fest and watch people who do bad in the crucible get the good items. And the bounties are a good way to get faction levels up and thus a good chance for legendaries, chests have a chance also, which is more optimistic to me than finishing a map with a decent score knowing that someone who might've afk'ed stands as equal a chance of getting something good. With pve i get the satisfaction of my hard work meaning something unlike crucible.