Of the total area that is used by humans (Agriculture, Urban and Built-up Land),
- urban and built-up land is 1m km²,
- agriculture is 48m km²,
so agriculture is 48 of 49 millions km² used, that’s 98%. The remaining 2% are all streets and housing and other infrastructure together.
Eating animals causes unnecessary suffering though.
It’s unnecessary because you can get all of your nutrition through plant-based sources. And if that’s not enough, there are plant-based meat alternatives as well as lab grown meat on the horizon.
You don’t have a need to eat meat because you have options to eat other things that cause less to no suffering.