Everything has its moments :) Most of the times I like complete silence, so often I sit up until 3-4 so I can sit on the balcony for 10/15 minutes in complete silence. Other times walking in nature hearing the environment and animals brings a lot of mindfulness and introspection. I've been nostalgic for the sounds of a running train in the past too, or just the rumble of living next to a busy plaza, but too much of that would be annoying too.

I guess ultimately variety is what I like :)