I stopped eating meat about four years ago. Like cutting out anything, it was hard for a few weeks but no longer. I have no desire for meat anymore and fully enjoy my diet. I’m technically pescatarian, but only very occasionally because overfishing is a huge problem as well. I also have gained muscle, and leaned out at the same time. Lots of factors at play, like exercising more, stressing less, etc — but I mention it because a lot of people think that being vegetarian or vegan means giving up on fitness goals like getting more muscular.
If there’s some aspect of you that wants to try cutting down on meat, give it a shot. Give it a few weeks, and go easy on yourself.
Addressing climate change will likely involve making personal choices about how best to decrease your footprint. If you can switch to a vegetarian diet, you’ll be making a pretty substantial move towards that goal — and there’s the bonus of not contributing to the morally questionable system of industrial slaughterhouses.