Teetotaling isn't "super healthy" necessarily. Medical studies disagree with and contradict each other all the time, but not in the case of alcohol. The consensus is that light consumption is actually good for the heart, especially when the beverage of choice is a red wine. A brewski now and then causes no harm, in fact might be of some benefit.
I respect anyone who has a real, diagnosed medical issue for which the treatment is total abstinence from alcohol (could be pregnancy, could be alcoholism, could be neither.) It's no faze to stick with soda or water when I'm with friends who gave up booze by need or justifiable choice, for I value their company more than I want a buzz. Two of the parents at a wedding I'll soon attend are dry (one from choice, one from need.) Whether or not the taps will be open at the bar makes no difference to me. But I have to stop short of throwing unqualified support behind somebody who thinks they're somehow enhancing their well-being by quitting alcohol without a concrete rationale. If there's no medical or other reason - such as "I feel like I perform better in the sack without it" - I don't see the point. Over everything else, though, if somebody wants to don a halo and imagine that they're doing themselves a huge favor by not touching ETOH it's no skin off my nose.