I find it sad that so many people are against the idea of compassion and selflessness, surely that reflects on what people think about other people? that's the scary part.
For the people who support veganism but don't have the willpower - what gives you motivation? what do you care about? a lot of things you wouldn't necessarily think relates to veganism - for me it's the animals, after watching cowspiracy and Gary Yourofsky's speech on veganism I vowed from that day on never to eat or abuse another being - it's the best thing I have ever done, there is loads of support and the vegan community do all they can to help you, after all it's not vegans who are the victims, it's the animals, the environment and yourselves.
... and the ones that won't