I'm really not, I'm well aware of the benefits. I'm also completely aware of the consequences you've raised. I could honestly state 20 benefits to smoking that would have verifiably accurate data in the 80's. Great social benefits, pleasant rush, conducive to thinking slow about problems, suppresses appetite.. Those are all correct facts. It's important that we don't ignore fundamentals, unless you're honestly saying that no amount of earth warming or co2 increase matters.