I must ask, how do we believe these players become so gifted in the first place? I suppose it becomes a question of ethics and basketball development. On my end, I've never seen basketball players who were just born incredibly awesome. Yes, it's a supposed gift to grow to be 6'6'' with giant hands but developing the basketball skills, coordination, and abilities that Vince did is not a matter of being gifted, in my opinion. Rather, it's the result of years and years of hard work.
I find there to be a large spectrum between not trying at all and trying as hard as humanly possible every day of a person's life. I get this feeling that because people know Vince Carter did not work as hard as humanly possible, he must have then not worked at all. At the risk of sounding redundant, there's a lot of people out there with Carter's measurements and what many would refer to as "natural athletic talent". 99.9999999% of those players didn't do what Carter did. Youtube mixtapes are full of guys who could jump like Vince, but definitely couldn't play like Vince, and I don't think that's because Vince Carter was simply blessed at birth with the ability to pull up and drill buzzer beaters from 35 feet. Instead, it was something Carter spent a very significant amount of his life working toward.
A specific example may be James "Flight" White. I think it's arguable that White may have been nearly equal or superior to Carter in terms of athletic ability (and in this case, we seem to be using athletic ability to refer to height, length, speed, mobility, and jumping ability). As it turns out though, White wasn't a fraction of the player Vince Carter was and again, it's not my feeling this was because Carter had some mysterious natural basketball talent that he never had to develop and White didn't. Rather, again, I find Carter's skills were something he had to commit a lot of blood, sweat, and tears toward developing. I don't doubt White worked his butt off as well, but that should only go to show how tough it can be to achieve success on the NBA level and why I feel Carter catches an overwhelmingly excess amount of criticism, as if he's never had to work hard a day in his life.
This is most certainly not a criticism toward you, Ruff, but that paragraph there is a very good example of what I've heard a lot from folks in regards to Vince. I get a lot of "He just looks kind of disinterested sometimes" and "It's just his body language" and "All he does is settle for jumpshots". In many cases, it seems to be merely a hop, skip and a jump from the "I don't know if I like how his face looks" comments to the "he has no heart and is a waste" point of view. In short, it's often felt like open interpretations of how people thought Vince was working, playing and living and over time they've seemed to slowly turn into stones of truth, and that's where I object.
I could see your point about his athletic peak possibly coming at age 24, but I feel there's a few things that clearly contributed to such a case. Further, I don't find it'd be accurate to say he severely dropped off after that age (nor do you suggest as such). However, I do think it's important to keep in mind that Vince did suffer relatively significant injuries as a 25 and 26 year old (playing in 60 and 43 games in the '02 and '03 seasons, respectively). I don't think it's terribly far-fetched to assume his game changed a little. Still, I don't find a player's improvement to be exponential and infinite. Different players peak at different points of their career. Vince averaged 27 ppg as a 24 year old. He averaged around 24 over the course of the next 6 years. Lebron James averaged 30 as a 24 year old. He's averaged around 28 in the years since. So again, I don't think it's outlandish to reach a statistical peak at 24.
With all that said, I do feel he continued to add wrinkles to his game as he aged. I thought he became a better facilitator, more willing to share the ball at the right moments, and even more likely to let the game come to him. I thought he was spectacular for a lot of his time in New Jersey. I do think those injuries zapped him of some athleticism (perhaps bouncing him from being out of this galaxy instead to being simply out of this world) but I'm still not sure I ever saw the potential for Jordan or Kobe-like greatness with Vince. I saw people saying that's what he should be achieving, but I'm not sure I agreed with their sentiments.