Although I do consume many things with artifical sweetners in, not always intentially, as it's often hidden in things, I must say I do quetion that something tht synthetic can really be good for you. I know some sweetners are banned in some countries.
In honesty I think there is all sorts of things in our food that probably shouldn't be there. I guess the only way to be sure is to stick to all orgainic fresh produce. But this is sometimes a costly option