D3 is now a game that powers you past most of its content so that you can get to running GRs faster, and basically do nothing else.
D3 talks about playing your way, but its design trivializes player choices where it doesn't remove them entirely, and there are so many places where choosing to play the game differently than Blizzard intend is basically penalized. Want to play solo in D3? Fine, but expect Blizzard to make it feel like as much of a waste of your time as they can manage, by ensuring that co-op players get enough drop rate and XP bonuses to leave solo players so far behind that they can't join a public game even if they later want to, without getting vote-kicked. Never mind that a recent survey on Reddit found that people prefer solo to co-op by nearly four to one.