There are people who prioritize family, work and real life's challenges. If you are so privileged as to prioritize a game's challenge over life then good for you, I envy you and I wish you all the best. But there are people who just need to relax and enjoy with a game and feel rewarded just for shooting some stuff for the tinny little time slot they're permitted to do so. Destiny is a great game and should cater for the solo and the casual because whether you like it or not, these players are the base of the community (as in every other game). You, and your try-hard friends are just some cherries on the top.