People have been posting on chat / message boards for a few decades now. This is not novel. Not sure the quality of discussion has improved since the modem days (14.4k was my first).
> or drive home from work (GPS)
Tens of millions of us learned how to read maps and road signs once upon a time. You can actually fit several states' worth of maps into most car glove compartments, it is quite wild.
> or cure cancer (various ISS research)
There has been lots of cheering of all the cuts that DOGE made, including cancer and other disease related research and prevention, so this seems a rather moot point.
> survive as a species
Oh yes! First crewed mission to mars according to Musk is just what, 3 years away now?
First, we don't really know what's there. Because the entirety of the rest of the world is there, and that's a lot!
Second, it's also a bit of a cold war-like thing. A kind of power can be asserted from space. This power can be used for military purposes (just like any other power), and the possibility of this power is real, so, existing, capable powers must ensure that they don't lose their power to the power coming from this new territory. So basically, defense is another purpose.
Third, research doesn't often have an immediate commercial or welfare goal attached to it. Simply because we don't know what we'll find, and how that'll be useful. In this way, one could argue that research is pointless, but I think that would lead to the pointlessness of life itself, philosophically.
Fourth, successful space missions elevate morale, by providing inspiration. It's also a tool for diplomacy, a way to connect nations via a joint effort.
Think more along the lines of communications satellites and humans on other planetary bodies.