it kills people who don't intentionally use it

Sources Please?

The whole debate of second hand smoke (ETS) was started by an EPA "study" in 1992. That study claimed that 3000 people would die each year from second hand smoke and classified ETS as a Class A carcinogen. The study was challenged in court and was found by Judge Osteen in 1998 to be deeply flawed and was written to do nothing more than support their predetermined results. There are numerous analyses of the report on the web and in print. Take your pick.

For the record, I am a non-smoker.