Yes a lot of planets in the universe get hit with the same kind of stuff. Groundbreaking.
Come on, Man! Believe in magic just a little bit! ;)
Pretty sure that when humans land on Mars they will find the same thing these rovers have found... Absolutely nothing of any consequence.
Rocks, dust, sand... Call it what you want, we have plenty of that stuff here on earth... And if hear one more time about finding water on some planet, I’m going to puke... And when I do it will be watery puke... Because we are literally swimming in water... We have more than enough water on earth to last for the rest of human existence.
In the meantime, these rovers appear to be doing a fine job without any humans and if one of these probes actually does find something other than rocks, dust and sand... Awesome! Then we should go there... Until then... Why bother?
Complex organic molecules are easy to make. Just take carbon, hydrogen, oxygen and a few other elements and mix them under pressure with a heat source for a few million years. Gas giants work well for this. The trick is making the jump from the most complex organic compounds to the simplest living organism.
Unless and until we either discover life somewhere else or figure out how to make a living organism from scratch in a laboratory we have no idea how common or rare life may be in the rest of the universe.