Because people are bad. Because not everybody got a Gjallarhorn. Because with 29 you'll die at the bugs of Gatekeeper/Atheon Boss Fight. Because you gonna have to start over that phase when that single guy keeps dieing. Because people give up too quickly. You need patience and time (not the weapon), a few 30s would be recommended and lots of experience and positioning which makes it: Fun, due to the awesome teamwork. Frustrating, due to the countless wipes. And last but not least completly a waste of time to hit 30 once you got raid helmet/vex and the pulse rifle. You won't need the other raid weapons as early as possible and can try to acquire them someday later with a more advanced group. Oh, Main Reason for not running below the required lvl? 1lvl 32% less dmg 2lvl 42% less dmg 3lvl 52% less dmg 4lvl 100% less dmg Plus you do also receive more dmg. Seeya