And honestly, while it would be cool, there is little point of sending humans to Mars.
People really underestimate how unique and cool our planet is with all that's going on.
Now, sending robots, and bringing some stuff back for analysis... Why not? Way cheaper too.
You can compare the trip to the circumnavigation attempts in the age of discovery, you may never see your home again, and die of dehydration in the middle of endless ocean.
But you can still breathe freely in the middle of the ocean. Space is more akin to sittting in a submarine, where to surface you need to travel for several months.