I feel bad for people that cause mass shootings.
Thats a terrible take. Why feel bad for mass shooters?
I feel sorry for them and what drove them to perform such a terrible act.
It's kind of you to have empathy for people, even when they've committed a terrible act such as a mass shooting. People need sympathy to help them deal with their personal issues and prevent an act like this from ever happening.
I wish the shooter would have killed himself after the horrible act he committed.
I can see why you may think this but sometimes people want the shooters to pay for their crimes.  Think  about the victims and what they may want in these kind of cases. Sometimes examples have to be made of mass shooters to send a message to other wannabe criminals.