I am certainly not an end-game player, and I usually play solo, questing, exploring, gathering, crafting.
But I also love to help other folks, I sometimes park a high-level at Hogger and will kill it anyone! (I hate that sniveling “guinea pig”.) 
When I need help, I just ask. in General. Most times I’ll find folks willing to help, even if they aren’t on the quest.
- Moto