Think about it.

When you think about, the heroes actually kill almost all of the villains.
Thanos.
Ultron.
Yellow Jacket.
Killmonger.
Crossbones.
Dreykhov.
Karli Morganthau.
Aldrich Killian.
Bishop.
Mysterio. (Well, we aren't sure)
Loki. (I guess he was reformed?)
Whiplash.
Alexander Pierce.
Hela.
Ego.
Ronan the Accuser.
The Black Order.
Kang the Conqueror. (It's complicated)
etc.

HUH

The suicide squad in a nutshell

LOL