I don't know, I think I am not even understanding nationalism and national heritage on a deeper level. I still live where I was born, one side of my family from

I don't know, I think I am not even understanding nationalism and national heritage on a deeper level. I still live where I was born, one side of my family from here and the other is from a different, neighboring country. I often feel they're closer to the local culture here than the rest of the country I live in, at other times it's the opposite. But in general I don't feel I could name a lot of things where I agree on the culture I'm supposed to be having. When on vacation I'm always glad to not run into fellow countrymen because I usually find them annoying. So what does cultural heritage actually mean and what is it good for? I've been on the internet since I was 15, depending on the day of the week I write and read more English than my native language (at times even speaking it the whole day at work). It's not that I hate my country but I don't think I'm seeing a lot of positive points either.