Sex On Mars

Soon the first colonists will be sent to Mars, the red planet currently populated by none other than the robots humanity has sent there.

But, there's a catch.  Scientists, exactly who I'm not sure, and other launch mission staffers, are recommending the colonists abstain from sex for the sole purpose that they may not reproduce and further populate the planet.

Their reasoning?  I've read articles that varied from the radiation is dangerous for newborns to the fact that supplies would be very limited and the idea of starting a family on the red planet would be heavily taxing.

So don't have sex, or at least try not to get pregnant.

Well, in my view, sex is fun, healthy, and a natural human thing to do.  It would be incredibly difficult for a co-ed team of colonists to venture to Mars, after spending months on a confined ship together, and then realizing the fact that, THEY WILL NEVER RETURN TO EARTH... having left behind all of their family (if any), friends (again, if any), pets... you get the point... to not want to feel the physical contact or even have relations to their fellow colonist.

I imagine the true feeling and realization that the future colonists will never, ever, again, see Earth, won't hit them until they've landed on Mars.  Maybe even half way there.  Possibly, for some, after a week or a month or two.  The psychological toll would be greatly devastating (But I'm not a psychologist so... whatever).

But, the point I'd like to make here is this:

Just spay and neuter everyone going to Mars.

Done deal.  Now, they can have all the sex they want without the risk of pregnancy, just STDs (maybe).

You see kids, this is how science goes.  It takes active sperm to fertilize an egg and then have that egg attach to the uterus of a female in heat.  Then, poof, pregnant.

So, if we cut the tubes and take out the eggs... problem solved?

What do you think?