Just by definition, the ability to have vision,
to dare something, which nobody has done, to inspire fulfilling a
dream and possibly fail is is something which is
not for everybody. Every entrepreneur, artist or
scientist, explorer or adventurer trying to do
something which nobody else has done yet, bears
risks with possibly fatal or ruining consequences. Maybe,
the negative and critical comments (as of them are here) provide
are helpful and even needed to select the right people and even
motivate them to do such extraordinary things. The word "extraordinary"
already tells it. Early settlers establishing new
life in "new worlds" were always considered crazy by the majority,
operations might have been called a "scam". Many of them died early, many did
not arrive. Tragic would be, if we would start to forbid
things. One can imagine a time, when more risky sport
activity like mountain biking, skydiving or climbing a mountain would
be forbidden, because it is too risky. The question is whether
we would become happier in such a locked down world.
Back to Mars One: it would be a fantastic thing so see humans live permanently
on an other planet. But it would only be really fun if there are
enough nay sayers who proclaim it to be impossible or idiotic.