Nothing is inevitable. If people become stodgy and short-sighted as they grow old, it's not because that's simply the way of things, or because fate made it so. It's because they slowly let themselves develop bad habits and cultivate negative thinking. It's because they closed off their minds to new experiences, for any number of reasons.
Not everyone who grows old grows crotchety - you can find proof of that easily enough. Your assumption is just as inaccurate and foolish as claiming that people are innately wicked, or any other sweeping statement of that sort. That sort of thought is the tool of racists and sexists and bigots and cowards of every order, and it's been refuted time and again by people who choose to look beyond the boundaries of their own little corner pocket of the world.
For the record, I'm not a fan of Beyonce or Kanye. Their musical styles and their images simply aren't to my tastes. (Although, I actually think Kanye is a skilled performer and some of his work is quite impressive - I just don't care for the baggage that comes with it in the form of his personal behavior.) But I've actually gone and listened to their work. Turned out it wasn't for me, but I at least gave it a chance and kept an open mind. That's all I ask of anyone.
The Beatles are great. They helped me see new facets of the world when I was younger and listening to them for the first time, and I still enjoy revisting them every now and again, but there are other facets of the world out there waiting that I want to see as well. I could never be content just listening to the same Beatles albums over and over again for the rest of my life. I want to hear other music, other stories, other bits and pieces of lives I don't live and places I've never been.
There is only one constant in this world - change. Finding things you love and sharing them with people is all well and good, but the world keeps changing, and if you worship your one musical idol at the expense of actually getting out and experiencing the world, then you know nothing of it and are not a part of it. You're living in your little bubble of the past, clinging to memory, letting the world pass you by.
*He's a real Nowhere Man
Sitting in his Nowhere Land
Making all his Nowhere Plans
*Doesn't have a point of view
Knows not where he's going to
Isn't he a bit like you
*Nowhere Man, please listen
You don't know, what you're missing
Nowhere Man, the world is at your command*
*He's as blind as he can be
Just sees what he wants to see
Nowhere Man can you see me at all?*
*Nowhere Man, don't worry
Take your time, don't hurry
Leave it all till somebody else lends you a hand*