Possibility of microbial life on Mars a long time ago

[Finspiracy]

I think that maybe life on Mars used to be a thing. When allegedly dinosaurs were killed off by a comet fragments of Earth could have made it to the red planet but couldn't adapt fast enough to its environement to survive, and then boom fucking biker mice from mars came onto the airwaves in the 90s. 

Biker Mice from Mars Intro - YouTube

According to my understanding, and some of the recent findings, dinosaurs were already doomed. The meteor that hit Earth back then, only finished them faster.

Life came to planet Earth from somewhere. Maybe God's work, i dunno. Pretty half-assed job if you ask me... Why create cancer cells into Mother Nature herself? Cancer cells commonly known as humans? One theory claims that an alien UFO dumped their UFO toilet tank here. And life as we know it, emerged. Plausible