Young turned down the chance to be included in Fabio Capello's squad as a late call-up for England's last international with Brazil in Doha in November.
Young said: "I pretty much got picked for one squad every 10 when someone was injured. When I used to turn up I used to sit in the stands.
"I didn't really get taken too seriously. When I originally got in the squad in 2005 I really wanted to give it a go.
"For whatever reason, I faded out after playing a few games and now feel like my best days are behind me."