A tail would be a terrible thing economically, since you'd pretty much have to buy all new pants. And I can't be alone in thinking that specialty pants with a tail-sleeve are going to be anything other than oppressively expensive. And it's not even like you could use your poker winnings to pay for those pants, because that involuntary tail wagging every time you get a good hand would be a huge tell.
So I think if you follow the logic, you, too, will conclude that while it may seem like a desirable brass ring to aspire to, you probably dodged a bullet by not growing a tail.