Drinking too much or not?

I drink about a case of beer or so a day- have for years, but my neighbor told me today (who drinks about half of that daily) that I was drinking way too much. I feel fine, good heath overall except a minor back injury.

No one else has ever told me they were concerned, so it kind of threw me off. Should I switch to wine or something? Realistically, I'm not going to stop drinking, so don't bother preaching. Just give me you two pennies.

I'm 53 yrs old, smoker (trying to quit), good health otherwise.