Well, as folks pointed out, the zones are pretty much heavily populated at the moment. The mobs ARE tuned to be decent challenges for a soloer (they were a good mix during beta, which had a much lower population) ... but right now, you're effectively grouped as all the early access folks rush in to do the same quests you're on.GIVE US MORE CHALLENGE!
Lol.. What am I reading? I wouldn't even consider these dungeons, more so public maps people go in to do a part of a quest. The REAL dungeons are the instanced ones, which you cannot do solo. You get into that at 10+. They're hard, though very fun.
I personally hate seeing other players while in solo dungeons too. Not only limited to dungeons but caves, rooms, houses or any sort of instanced quest area aswell. It ruins any immersion...
Got to think of it another way. As servers are in early access and even when they release will be massive influx of players so expect 30 people in same spot early on. As these power levellers grind past you and players quit or get obsessed with some other game as gamers tend to do. . . There will be less people crowding spots. I was 5 day access and just before the 3 day started i ran back to earlier areas and literally found NOONE. I gathered loads of crafting mats that way too once the initial rush is over things will stabilize and be better. Plus as another said the best dungeons are the private group ones and they are awesome!
This calms down as people spread out. its like this at first but instancing everything would make it more like a single player game which people complained about a LOT in swtor. I really enjoy it the way it is and have made a lot of friends in those instances.
This is an MMO not a single player game and I prefer it that way.