Retro gaming a perspective

What is retro gaming the dictionary defines retro as "a prefix occurring in loanwords from Latin meaning “backward” or of or designating the style of an earlier time",But  how long ago does an earlier time have to be I mean yesterday is an earlier time but noone says "I played this game that came out two days ago its so retro." so anything qualifies as retro... right? right? oh god dang i- WRONG WRONG WRONG! Retro is in my opinion what is old and nostalgic to someone but also old in general I mean I don't really think it's gonna be retro unless its GameCube era and that's a stretch.I mean I guess if a 3 year old got a wii when it came out and is now 10 he could classify the wii as retro or maybe retro just depends on age and personal experience maybe it's a stretch but most gamers who use "retro gaming" mean old so it really depends on age but you could classify retro gaming as nostalgic gaming depending on the context so yeah that's it see ya