Today is my 65th birthday. I've been using lead/tin based solder for most of my life and when a youth use to play with pure mercury which was a lot of fun. I will die of some cause but I suspect that solder and past contact with mercury will not be the reason. Lead free solder is not something will ever play with until, if ever, I run out of my lead based solder and can't find replacements anywhere including E-bay. I'll let others work on saving the planet as I figure the planet as a finite lifetime anyway once the Sun explodes.
Lefty