I had to give up alcohol due to a stomach inflammation condition and the biggest benefit for me has been clarity of mind. Gone are the fuzzy evenings where I couldn't quite remember what I had told a friend or what I had told my boss...
Also, healthwise, I find myself being able to taste flavours much better - as if alcohol was somehow depriving me of my sense of taste before, even on the nights when I wasn't actually drinking.
Finally, it's helped my bank account tremendously
I was never a binge drinker but I was certainly drinking more than what was recommended.