Ben Affleck vintage car smoking Didn't anyone tell him smoking was a bad habit?!

This A-list actor left his Pacific Palisades neighborhood to head to a meeting yesterday, and even though he has three young children to stay healthy for, he still couldn't resist the urge to puff away on a cancer stick.

The Boston-born hunk has struggled with addiction in the past and even spend some time in a rehab facility, but it seems nicotine is his vice of choice these days!

Click thru to see who was smoking away in his vintage 1966 Chevy Chevelle ride...