Well fortunately I said easier, not easy, and I didn't say humans aren't interesting. You're the one saying people that prefer to play other races are immature. I'm just trying to highlight why I and others like playing fantasy races.
(Edit: Having given your post some more thought, I'm not sure the two ideologies "race of a character is irrelevant to a character's interestingtude (which I agree with" and 'Humans are more interesting)' are *entirely compatible.
If we agree that various races represent aspects of humanity, that's great, but that doesn't mean a fantasy race represents only a fraction of humanity as a whole and is therefore less interesting. Especially since just because a person may play a Human, it doesn't mean they are representative of all of humanity. One human does not necessarily represent all aspects of humanity at all times. A goblin can feel love, loss, wealth, poverty, family, etc. Depends on the writing.
To use my previous post about Dwarves/Elves, say I'm playing a Human who is a 'down to earth' Coal Miner whose brother is killed by kobolds, so he becomes an adventurer who wants to kill kobolds for vengeance. First off none of that story is reliant on the fact that he is human. Could be a dwarf, could be a goblin, could be a firbolg. The 'interesting' part is his relationship to his brother and opinions on kobolds. An 'analysis' of the story would find that this character does not necessarily represent the 'loftier ideals of humanity.' Then you can get into a 'micro vs macro' aspect of story analysis and playing into type or against type.
Subjectively finding humans more interesting is fine, more power to you, but that doesn't mean people who prefer playing other races are wrong, immature, or just want attention, to want to play those options.)
