I guess you wouldn't be saying "please stop having children" to Satoshi's parents, now would you ?
Of course, I would. Especially considering Satoshi is already born.
If you believe that the planet can't handle more people, do the planet a favour: kill yourself.
That wouldn't be very efficient.
By killing myself right now, it would remove only
1 individual from the Earth population (and I would be quickly replaced by dozens of newborns in the following seconds).
By helping a few people realize that breeding like rabbits isn't sustainable, I might help them to avoid adding
several individuals to the world population.
Also, check out what the
VHEMT has to say about suicide:
http://www.vhemt.org/death.htm#killselfDISCLAIMER: I am not affiliated with the VHEMT, and I don't think we should go as far as letting our species die. I'd rather see Humanity achieve sustainability. Either way, we have to stop increasing our population size.