Militant-ism isn't going to win people over.
The great lie of capitalism is pushing a theory of personal responsibility rather than legislating these problems away.
There are so many elements of my life that cause harm to other beings that addressing the harm could be a full time job.
Killing rodents, mosquitos, and ants is something most people will do without a second thought. I've sprayed a wasp nest with wasp killer and one writhed on the ground for 5 minutes and I felt awful about it, but there is practically a whole aisle of it at the local hardware store.
How many insects do you think have been harmed by industrial pesticides used in growing grains? What type of animal harm do you think pet ownership brings? How many wild birds do you think are killed in how many different ways? How many animals do you think are hit with cars? What do you think the effect the shipping industry has on sea life? What about trash? What about the smog? What about the chemicals dumped into the environment that are used to produce the hardware we are communicating with?
How much animal testing has been done by scientists on all types of animals to have what we have today?
My desire to pay as little as possible for coffee means the barista can't afford a home and likely will have their body harmed by the stress of not having enough money to operate in today's society. We send manufacturing off to poor countries were pollutants more directly harm their citizens than ours.
The wikipedia article states that poultry sex can be determined before hatching and that European countries have legislated that culling must stop, so it sounds like we are able to make progress. "Beyond" shows there is at least research going into lab grown/cruelty free meats.
Do I have a moral obligation to go live next to a pond feeding on what I can forage while living in a dwelling I built with my own hands or is it satisfying enough that I vote progressive and hope to make progress over time by regulating the more atrocious of our actions.
FWIW, I have tried vegetarianism and I did not enjoy it at all. I found it greatly limited my food choices. It felt ascetic and I felt miserable. So while it is easy for you, I did not find it easy.