Bilbo is pretty unhappy throughout most of 'The Hobbit', so I don't know whether you'd say he was more unhappy in Lake-town than any other point. Tolkien mentions several times that Bilbo is hungry and tired and wants to be at home. He catches a cold whilst riding down the river from Mirkwood, so this might make him a little miserable, and I think he might also feel that the dwarves and the men of Lake-town were getting a bit carried away with all the old stories and forgetting that in fact the gold they want is guarded by a dragon, and they still have no way to get him out of the way.
He knew where Bilbo and the dwarves had come from, so he destroyed the town for helping them.
That would be Bilbo at his birthday feast in Laketown. He had caught a cold in the river riding the barrels.
Bilbo, with all the dwarves' plans, is unhappy because they involve him checking the situation out.
Bilbo put the dwarves in barrels that the elves dropped into the river to float back to Laketown, where they were reused to ship food and items back to the elves.
How lucky he was to see the Lonely Mountain. The roads had all been closed off and he had stumbled on about the only way to reach Laketown.
Bilbo was unhappy because Gandolf left and he was very upset. That is why Bilbo I think Bilbo was unhappy
because he tells smaug he is Barrel-rider
At the end of The Hobbit, Gandalf and Balin come for a visit and bring Bilbo up to date as to what was going on with the Dwarves and Laketown.
He knew where Bilbo and the dwarves had come from, so he destroyed the town for helping them.
That would be Bilbo at his birthday feast in Laketown. He had caught a cold in the river riding the barrels.
He was fifty at beginning, and turned 51 in Laketown, between escaping from the Elven-king and arriving at the Lonely Mountain.
Bilbo, with all the dwarves' plans, is unhappy because they involve him checking the situation out.
He knew that they had to have helped the dwarves. The clues Bilbo gave him made it clear that Laketown was involved.
They are happy because they like adventures. Bilbo is unhappy because he doesn't want to leave his peaceful life.
Bilbo put the dwarves in barrels that the elves dropped into the river to float back to Laketown, where they were reused to ship food and items back to the elves.
How lucky he was to see the Lonely Mountain. The roads had all been closed off and he had stumbled on about the only way to reach Laketown.
The Hobbit is fairly linear. There are a few places where the time line backs up, particularly when the dwarves and Bilbo are exploring Smaug's den and Smaug is attacking Laketown.