You can't expect max light without a challenge. The fastest way is doing the raids which requires a team. You can still do Nightfalls and you can still get excotic engrams. Plus you have pvp events which can take you to max light. You do have a choice. You can do raids and hit max light within a few weeks or you can do it the long way. There's a simple reason why vanguard and factions don't go to max light which I agree with. Runing strikes and doing patrols to level up is to easy. Also some people have like 3000 motes of light. They could reach max light with no effort.