Yep, moderation is a good thing and sometimes I guess there's total abstinence on things that aren't good for us. I think if one totally denies oneself foods that one likes it could lead to unhappiness and depression but eating them could be worse so I guess common sense needs to come into it.
Lifegevity is probably everyone's priority but some don't work very well towards gaining it.
Yes, I agree there's always need for common sense.