I eat meat on occasion, but not "just for the heck of it", certainly not in the case of beef (you're misleadingly equivocating between "meat" and beef in your post when their ecological impact is very different).
Back-of-the-envelope numbers from a quick search suggest that a day's eating beef is equivalent to driving maybe 15 miles in terms of climatic impact, a day's chicken equivalent to ~1 mile. So "only drive when you're getting at least 1 steak/15 miles worth of fun out of it", and conversely "only eat steak when you're getting at least a 15 mile drive's worth of fun out of it", seem like good principles to live by.
Back-of-the-envelope numbers from a quick search suggest that a day's eating beef is equivalent to driving maybe 15 miles in terms of climatic impact, a day's chicken equivalent to ~1 mile. So "only drive when you're getting at least 1 steak/15 miles worth of fun out of it", and conversely "only eat steak when you're getting at least a 15 mile drive's worth of fun out of it", seem like good principles to live by.