A couple of weeks ago I got a stomach-ache, and I realized it was ages since the last time I'd had one. I used to get them all the time. I feel like I'm getting fewer headaches too, though it's hard to be sure. Certainly the experience of waking up queasy and exhausted after drinking too much the night before is one I don't miss.
While in general people today are far healthier (with the glaring exception of the epidemic of excess weight) and longer-lived than ever before, there are still improvements almost all of us could make. It takes effort -- very definitely it takes effort -- but the rewards are well worth it.