Spire said:
You can solo all the way to level cap very easily.
So people say, but it took me 2 years to do so, and only then because of the skirmish system let me do the upper 30s and lower 40s. (Once you hit Eregion it's easy to level, I'll admit, but the 30s and 40s are rough, very rough)
And even now, as I still don't group, I am woefully undergeared because I don't have any gear from instances nor any book rewards.
Heck, I'm stuck on a couple of supposedly solo quests now. In Enedwaith, I need to kill a giant and a big ass goat. Both quests say they are solo, but they have literally 3x my hit points.
And in the Book quest leading up to Enedwaith (getting all the Rangers together), again, supposedly solo, I have to fight duos (the hillmen in the North Downs). One I can handle, two I cannot, because even mobs my level have 500-1000 more hit points than I do.