That is a good point. Thus far my wife hasn't been in bed with me since I got it, though she needs to week the hell up when I do anywayI wear it to bed so I can use the silent alarm (whereby it vibrates on your wrist instead of an audible one) so I don't wake up my wife!!
I think that feature alone is worth wearing it to bed - so why not get it to track your sleep at the same time.
😉