I just find it really inspiring to know we have the presence of such adventurous explorers. Once we find ways to travel to other stars, we'll need these men to explore once again.
Having watched Everest and read Cold: Extreme Adventures at the Lowest Temperatures on Earth my view has changed to that these people are selfish glory seekers who can potentially cause a lot of grief and heartache for the people they leave behind when they screw up. As well as huge expense for rescue operations (which then put other people's life at risk).
I sort of understand your pov, but in this day and age they're literally making up dangerous challenges for themselves and have been for decades now.
1. https://www.nytimes.com/interactive/2017/12/18/sports/everes...
But the point about the grief and heartache for those left behind could be said for anyone who does anything risky. Nothing more dangerous than a gentle stroll unless you're a single childless orphan?
You'd want an entirely different sort of person if the idea is to travel interstellar distances inside an asteroid, like slfnflctd suggested below.
Then we'd need to figure out the best way to propel it, and to where, and oh yeah, find a bunch of people who are willing to live the rest of their lives on it and raise a second generation (with an unknown future) there. It would take a lot for that all to come together, and any other plan you could currently devise would probably require fictional technology.