What's so great about heritage, anyway? It's something you can't control and exclusively involves what other people did in different times under different circumstances. In most cases, people you've never met and who wouldn't understand you if you did.
Culture is different. Culture is active and alive. You're part of that. You have the ability to improve upon the lifestyle that's home to you. And if you don't fit in with your culture, well, you're free to break from it and reshape yourself.
Heritage is a flimsy excuse to avoid personal growth and introspection. At worst, it's what allows grown men in modern America to hate and kill people for looking different. Who needs it?