The Surprising Ways Mars is Hostile to Life

Physic Girl
You  make a detailed  analysis of the hostile Mars atmosphere and it implication on  possible human habitat , but completely forget about  some  much more crucial : the gravity .
No planet with different   to Earth gravity  is suitable  to any realistic  terraforming , and such is a Mars too.
We can stay  there for some time , but never colonize   nor live there . Mars is also  worthless from an economical point of view , as   there is nothing  valuable for us. Economy or politics ( or both ) always drive any kind of  exploration , never  science . Science is  just a tool  to overcome  any possible obstacle.