I wouldn't really use a sleep aid unless you know you'll need it. If you are tired and are going to sleep well that night, you wouldn't need to take anything nor should you.
Same with Rx sleep aids. I wouldn't take those everynight either. Even with chronic sleeping conditions.
I have sleep apnea and never sleep deep unless I use 25mg ambien or some crazy dose like that.
Lol, Last time I did that, I woke up that next morning having thrown up everywhere because I apparently sleep walked and binged a ton of random stuff from the medicine cabinet(cold/flu/sleep/vitamins/Rx MAOI's and Benzo's). I called an ambulance when I discovered what I had done and I had to detox in the ER for that. The doc's said I tried to kill myself in my sleep. WTF? It was horrible and I would have died from poisoning if I didn't puke it up. Needless to say, I won't use Rx sleep meds ever again.