Can you learn a language only to understand songs and movies? I'm learning Spanish but I won't need it anywhere ..not in my job or in my life I don't even have Spanish friends.. but I like it

Can a person learn a language after the age of 30?

Is it correct if I say"she is my age"?

First notebook entry: Introducing myself This is me ...Esperanza.so simple and so naif ..I hope I will find good friends here...welcome everyone