I'll deal with this is order
1. I used grammar
2. I'm not straight edge, I also said my name is pretty much for lols
3. I've listened to grindcore, I find that pretty dull
4. The rest is pretty much each to their own
Ok, I recognise all the bands you've listed as the forefathers of hardcore and that they started the movement and that's hardcore in it's rawest form and I've listen to all those bands some don't think I'm so fucking uneducated prick who thinks he knows everything about 'hardcore' 'çause he's...
Most of the stuff I've seen listed is about as far from Hardcore as you can get whilst maintaining some slight connection to it. If you want some proper hardcore listen to bands like
Terror
Miles Away
Bad Blood
Carpathian
Word Up!
50 Lions
Relentless
Then with more new school metal influenced...