we've been cooking a few vegetarian meals to appease a teenage daughter who's worried about the environment (me too)
i'm glad at least one of you feels guilty.
I support it. Initially she wanted to go 100% veg but provided no input on vegetarian meals so I was doing a few meals a week w/ vegetarian options. Then I told her we could make a bigger impact by having the whole family eat 2-3 vegetarian meals a week so that's what we do.
It's really hard to go full veg as a family IMO. Although I could eat some form of rice, greens, and lentils every day for quite a while. Just not many people are like that.