People become vegetarians for a couple of reasons from Health to monetary or even religious reasons. It’s usually personal preference that is the determining factor although there are other factors to consider. Is the person an animal lover? Are they concerned about the environment? Do they feel better when they omit meat and poultry from their diets, or do they have health concerns about eating these foods?
https://alicemagazine.co.uk/lifestyle/why-do-people-become-vegetarians/

Tell us, are you a vegetarian? If yes, why? If no, would you consider it?

because they do not have money to buy meat

It’s a free world. Anyone can do whatever they feel like within the confines of the law.