fuck you on wanting to take away my ability to protect my family
So how many times did you protect your family with guns so far?

You do realize not a single universal background check would have prevented these shootings.
Now I'm seriously puzzled what do you mean by a "universal background check", because I'm pretty sure these could prevent at least a few shootings. Afaik even in one of those three recent cases it was generally known that the guy was not ok, but there was absolutely nothing to stop him from buying a gun anyway.

It would also be nice to check whether people store their guns in appropriate conditions, so that for example their angsty teenager can't steal one and do something stupid.

Fuck you don't even know how many are killed by them!
https://ucr.fbi.gov/crime-in-the-u.s/2017/crime-in-the-u.s.-2017/tables/expanded-homicide-data-table-8.xls
Correct me if I'm wrong, but it looks like roughly 10 000 intentional murders total per year, so 30 per million per year
https://www.cdc.gov/nchs/data/nvsr/nvsr68/nvsr68_09-508.pdf (especially page 51)
Or 15 000 not necessarily intentional homicides, over 20 000 suicides, together with other cases 40 000 total.

Which also links back to the first part; with anxiety, unipolar and bipolar you might as well be more likely to kill yourself with your own gun rather than be killed because of not having one.

You don't even know how many people are saved by guns a year, do you?
And back to the stats, that would imply that about 5 000 firearm homicides per year are not murder, so at the very best that's 5 000 kills in self defence as opposed to 10 000 murders. Feel free to link any other, relevant statistics, though.