My worst travel experience was during my working holiday, during the very first week, when I went to my first job on a farm and the job was the opposite of what they had told me, and even worse, I was all alone in a different building with no one to talk to, had my meals alone etc... When I complained they just told me: "Others have been ok with this!" and pretended they had told me about it on the phone.
The experience still wasn't that bad, I got out of there after one week and found a new job on another farm. It did not at all affect my love for Australia, on the contrary, I think I learnt a lot from this experience.