This is a very simple concept.
A story is told, the story has a message. You read the story and you get given the message.
Ever read a fable? The message is general, you could simply just write the fable down as a sentence, but stories have always been an effective way to deliver messages like this. They remain with you longer if the story itself resonates too.
Again, I'm not saying the comic itself is great in quality, but it's very clear what it's doing.
No, his dream was to visit the Amazon. And, again, "his" dream specifically is utterly irrelevant to the overall message. It's about "your" dream.
I took a risk and I have obligations. I quit my job and retrained as a web developer. It was an incredibly tough eight months, in which I was hospitalised due to the lifestyle I was forced to take up aggravating a long term health condition, and I went through some horrible situations with some "friends" (see my thread history if you care to), but it was absolutely worth it as I'm now a freelancer making great money doing something I love.
Ive taken risks like this before and not had them work out, but that's life. I'd rather take these risks and say I tried than not.