I never woke up with lows until I got to college and now I wake up at the slightest symptom.. my mom loves to hear this since she was always so worried!
i don't wake up with lows much anymore (which might mean that i'm not having nightime lows. I love my pump!) but when i was on Lantus, I would wake up having taken my shirt off in my sleep because I was so sweaty. Then I'd look for my shirt before going downstairs to get myself something to eat. I don't miss it.
I always wake up during the night when I am low. I can just feel it and know.
When it comes to lows, always is a dangerous word and a poor assumption. How would you know if you wake up to lows always? Most people w/D will sleep through many lows and never know it.