I guess I have a different view...
>>anyone else think mars is just another planet man inetnds to turn in a sess pit,
One nice thing about approaching the exploration of a new planet - we choose which parts to explore, and who explores them. While we don't have any plans of turning Mars into a 'sess' pit, we will also be approaching the planet with advanced technology & limited numbers of people... Mars may not remain pristine, but...it won't be overrun with the humanity we see on Earth today.
>>surely we shold be getting our own back yard in oder before pissing on some body elses lawn,
Maybe the means to getting our own back yard in 'oder' is to explore other places, developing the technology to travel there, to survive there, to build there... We've been trying to clean up our own back yard for hundreds of years... it would only work if *everyone* on the planet works together - and... we know how that goes...
Maybe by limiting who gets to go - the ones who do *can* work together to keep Mars ideal.
>>i keep hearing we should move to other planets to protect the species,
>>but anything happening to earth is just as likely to happen on mars
No, I disagree.... with the exception of a solar event, there are dozens of things that can happen to a planet without affecting others - disease, meteor strikes, geologic events, war... what may kill the population on one planet may not affect another; and in that respect, you'd keep the species going.