He was a kingpin dealer who manipulated others into trafficking drugs, not just some poor guy who was unwittingly forced or tricked into carrying cannabis. His pawns, forced into doing his bidding, were spared the death penalty.
I personally don't think marijuana is harmful, but if you're going to be intentionally running a network distributing drugs knowing full well the law, there is really nobody to blame but yourself.
> Especially if you're raising kids
There is no better place to be raising kids to be honest. Singapore boasts a world-class education that consistently ranks at or near the top of the OECD PISA scores, a rich culture with both Eastern and Western perspectives. My Singaporean colleagues (here in the Bay Area) are all outstanding people with both a fine grasp of technical matters and great creativity and critical thinking skills.