Among the active players, Harden is the best scorer, and no one has won the title of scoring champion for several consecutive seasons. Although Harden's playing style is often ridiculed by fans, I have to admit that Harden's playing style is better for the protection of the body. Because of this, Harden's attendance rate in the past 10 season has remained above 90%, even higher than James! In this way, Harden is likely to hit 40 years old.
Paul is now a rare traditional point guard. Although he didn't win the championship, he is still considered as one of the top ten point guards in history. Now he is 36 years old, but he is still an all-star level, which proves Paul's ability. By the age of 40, his physical fitness may decline, but he can still gallop on the court with his players.
Curry is also expected to retire after 40. Curry had a glass figure at the beginning of his career, but he was rarely injured later. His main scoring method is three-pointers. As long as he avoids physical contact, there won't be much problem before he is 40.
As the first active player, James is 36 years old, but he can still stand at the top of the league. No matter from the physical fitness or the ball dealer, he is not lost to a strong young man at all. James's 40 years old is just a trivial matter. See if he wants to.
The last one is more powerful. Calling 50 may not be a problem. He's Wilkins! Wiggins has a physical talent comparable to James's, but after he got the big contract, he started his own health-keeping style, and was also called the first in Lycium barbarum by fans. According to his old-age style, he may be able to hit the age of 50 without being injured! Of course, this is just a teasing as a fan. The 50-year-old NBA player has never seen it. If he can live to be 50, he can make history!