> I have a hard time finding interest and value in human space flight in 2021
It's impossible to predict what tech can come out of such efforts that will be of use here on Earth in the future. The amount of money going to space exploration is peanuts so I think it's well justified if it has even a trace of potential to improve future of humanity and that has been true historically - e.g. satellites (GPS, weather, etc), medicine (MRI), and whole bunch of NASA spinoffs and more.