That's true every religion teaches us to be good to the animals and take care of them as much as we can.
We can avoid eating animals but if we are getting enough substitutes. They do have emotional feelings and we should accept that.
That's a good idea I would say, we got to think of it the other way around, but then even plants have a life and we do not really have options there. We can at first stop killing animals for fun and start taking care of them and give them freedom, it will be a long process but it will help