I honestly like Tidus, he has been openly to his friends which is good, he didn't complain because he has good reasons, he's always being realistic and look at how Tidus treat Yuna in the whole game (Yuna is surely lucky to have him). Overally, I'm pretty sure that Tidus's personality is much better than many guys on this Earth.

Let me tell you, if someome hates Tidus then they are jealous of him, no agurement about that