Why is the term friends,good friends and buddies so loosely used nowadays?

Friends are people whom you know and can talk to but you know will not be there for you when you need it.

Good friends are people whom they care for you and you care for them but are people whom you don't get much chance to interact with. Quality of time is more important.

Buddies are people whom are willing to die for you and whom keep hanging around always there for you every single minute.

How many friends do we have, which we treat as good friends, or good friends which we treat as buddies? It's like a pyramid. Friends from the base, good friends form the middle platform and buddies form the top which means they are the least in numbers.

In my 19 years of life i still havent found such a person that can be considered as buddies which includes my secondary school friends.

And are all nice people bullied? Why do i feel such indignity when i see nice people being bullied? Issit becos i'm one of them?

But how can i be nice?
I'm unfilial to my parents,
Making my parents worried for either health safety or studies,
I throw tantrums at my parents,
making my brothers worried for my future,
quarrelling with them.

I guess being nice on the surface is kinda redundant. Ultimately my family should have been my top pirority for a long time. I keep telling myself that but i don't know why it still doesn't happen. I guess its kind of hypocritical.