I believe performances on the field count, and not a player's age.In this format, bowlers are always under pressure. I was injured (finger injury) during the 2011 World Cup semi-finals, and post that - Ashish Nehra was the only bowler who didn't play for India. If you see my record from say 2009 till the 2011 World Cup, I was one of the leading performers. I will continue to play till my body allows me to. If the same Nehra or Hogg doesn't do well - then you will say T20s is a youngsters' game.
Source: Times of India May 15, 2016 10:14 UTC