Why does thorin and company hate the mirkwood forest?

Thorin and his company dislike Mirkwood Forest primarily due to its dark, ominous atmosphere and the dangers it harbors, including giant Spiders and the threat of being ensnared by the enchantments of the Wood-elves. Their journey through the forest is fraught with challenges, leading to feelings of disorientation and fear. Additionally, the forest is associated with the loss of their companion, which deepens their aversion to it. Overall, Mirkwood represents a significant obstacle in their quest to reclaim Erebor.