I am not keen on climbing at night for two reasons ...
1) I feel dizzy ... I think it has something to do with the sway of the light
2) I can't tell how far I have to climb or how steep the climb is, and so I don't know how much energy I should use, or should keep in reserve, in order to make it to the top.
I find climbing at night very disorienting.
But riding on flat ground at night can be lovely.
