Meltdown. 
The great thing about this thread is you've accomplished absolutely nothing. I didn't even entertain a single one of your so called arguments lol. I love pitbulls. I'll continue to be a pitbull owner. I'll even continue to promote responsible pitbull ownership in my neighborhood and where ever me and my pits go. You should see my block... so many pits. It's glorious.
Enjoy your meltdown. I'll enjoy owning pitbulls. I win.
Your arguments are basically only that
1) You like Pitbulls
2) Pitbulls can be great pets
3. It's the owners responsibility if a Pitbull does harm
4) Other breeds can be aggressive too
I'll answer these for you:
1) Good for you that you live in a country where they are legal then, cause in many countries pitbulls are banned
2) Comparable to playing with loaded guns and leave them in your house for your children to play with- good fun until they are dead or injured
3) Does not help those who are harmed. Is there a legislation/license for having Pitbulls? No! How can then a society accept the risk of accepting pitbulls in public places?
4) Sure, and those who kill or seriously injure people should also not be allowed.
NN