Is it normal for a kid to think this way?
When i was a kid i used to kill insects because i felt sorry for them. I couldn't understand their natural enviroment and i used to think it was sad for them to live crawling in the dirt, so i used to kill them to end their misery. Is it normal for a kid to have this mindset?
For a child yes, because children do not understand much.
I wouldn't say it's normal but the mindset of children isn't normal compared to the mindset of adults.
I used to be quite Icky of insects but now I can't even bare to see them crawling on an open floor in case they get trampled on, so I have to pick them up and move them somewhere safe.
Sounds psychopathic. You'd fit right in on this website, it's filled with sick fucks like you.