#2 The Almighty Christopher Daniels (AKA Fallen Angel, the General)
Age: 48
Years in the profession: 26
The reason he might retire: Age and injuries.
Christopher Daniels began his illustrious career way back in 1993. An independent circuit standout and legend, he was already famous in the wrestling world when he signed a contract with WWE in 1998. However, he was mainly used as enhancement talent, and his biggest role on screen was as Conquistador number two (dos) during the angle where Edge and Christian revived the classic era gimmick.
Daniels was also traded as part of a talent exchange with ECW. He wrestled Rhyno and other stars, usually losing. He also made a brief sojourn into WCW's fading days, though an injury cost him a full-time contract.
Daniels became a big star by virtue of Ring of Honor and TNA (now Impact wrestling.) There, he was able to let his technical wrestling talents shine. Daniels is now wrestling for ROH again, and also makes appearances for indie leagues and NJPW. Daniels is one of the few wrestlers who has wrestled for every major American promotion; ECW, WCW, WWE, TNA, and ROH.
While Daniels has not, as of yet, specifically mentioned a specific point in which he wants to retire, he did mention this in an off-hand interview.
I feel like my career is pretty close to being over. I'm not going to put a timeframe on it, but I know that I'm talking probably in terms of months probably when you think about it."