I could spend hours writing a response to this. I am mid 30 and my style of music changes with every season I am not within trends but most songs I enjoy most are not older than 3 or 4 years. Not all of them are well known.
Even something established like Punk reached new heights with more modern approaches (ex. Sleaford mods, Team Scheisse in German)
I think music is very subjective still but new music never stopped to impress me.