Note
Don't plant other people's excuses
Do not tell the bystander what excuses other people use: most people think it's expensive, most people worry how friends will react, etc. You plant ideas they may not have had. Let them surface their own objections. Ask what is stopping them, not what stops most people.
Gives ammo
Most people don't go vegan because they think it's too expensive or their friends won't approve. Is that you?
Gives nothing
Is there anything stopping you from living vegan now?