Wonderful that you have these discussions with your family and it was interesting to hear the response of your children - especially your youngest -

I want to be healthy because I don’t want to be unhealthy.

Also interesting the perspective of the socio-environmental influences on youth and unhealthy choices!

Isn't it wonderful that you could just drop the smoking and alcohol when you began meditating! I was living a pretty healthy lifestyle when I took my first Vipassana course but it was more the mental and emotional health that improved with the meditation.
Good quote from the Buddha -

to keep the body in good health is a duty...
otherwise we shall not be able to keep our minds strong and clear

Thanks for sharing!