Because in some sports they are too heavy to wear like in high school Wrestling. they have small helmets.
If the quarterback were to drop kick he would become a kicker and not a quarterback. The roughing the quarterback penalty would change to roughing the kicker.
kicking a soccer ball and football are very different but you can but it is rare.
George Blanda
University of Kentucky between 1946-1948 ... he played for head coach Paul 'Bear' Bryant.
Kicker John Carney played in two games for the Saints in 2010 marking his 23rd consecutive season in the NFL. Quarterback Brett Favre of the Vikings and kicker John Kasay of the Panthers have played 20 seasons and kicker Jason Hanson of the Lions has played 19 seasons.
In night games the Colleges use footballs with white rings on each end so if the footballs are passed by the Quarterback or kicked by either a punter or kicker, the football is easily seen. So the answer is : so the football can be seen.
k=kicker p=punter
the football position ks is Kicker
Easy: that was George Blanda who played quarterback and kicker in college and in professional football. He has the record of the most seasons played at 26. George, at the time of his retirement, had scored more points than any other football player.
Richie Cunningham has: Played Himself - Dallas Cowboys Kicker in "The NFL on NBC" in 1965. Played Himself - Dallas Cowboys Quarterback in "NFL Monday Night Football" in 1970. Played Himself - Dallas Cowboys Kicker in "NFL Monday Night Football" in 1970. Played Himself - Dallas Cowboys Kicker in "NFL on FOX" in 1994. Performed in "Swansong: Story of Occi Byrne" in 2009.
He was a kicker
the kicker