dontdoit, H'row Dctr and wiggy, I totally agree with you!
To the OP I will say "you are alive, so stop whingeing!"
Taking a "look see" is all very well if you have a safe and hopefully legal escape plan when the radar screen fills with red and the VHF radio begins to hiss, along with the heavy rain on the windscreen.
This captain + crew didn't like what they saw, and delivered their pax and 'frame safely and without hail damage, fit to operate another day.
If you have doubts about their decision, I understand European railways have a very good service, or you could try driving a road vehicle, with the statistically greater chance of coming to grief. Or as your poster name implies, you had the option of canal and boat.
Sad that these pages are contaminated with such rubbish..............