Pros and cons of wearing a bra 24/7 ?

Im quite well endowed, 36D, and Im juat looking for some pros and cons of not wearing a bra to bed. During the day I wear one and my bras are really comfy. I buy good bras because im well endowed, so I dont buy cheapy ones. But at night I find they pinch and are really uncomfortable and I toss and turn to fix it. Is it bad to sleep without a bra?? Or is it better to sleep with one???