A light musk is what I prefer, to bed.
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so I usually don't spray anything before bed. (Though I do enjoy it when something from the previous day is still there the next morning, like the magnificent Grain de Soleil that I wore yesterday. That stuff doesn't know when to quit!)
and secondly, when I smell a perfume on myself, it makes me enjoy it actively, so it constantly keeps my attention fixed to it and I can't get asleep. 
Soap 😃
Is there a particular soap you use? Lately, I've been using a tuberose body wash by Alba Botanica. It's very heady and all the perfume I need before bed!
I agree with the original poster: a simple musk is ideal for me before bed. I use to have Dame Perfumery's "New Musk Oil", which was sublime. I don't remember what happened to my little bottle but I might need to buy a new one. I also used to use "Pour Un Homme de Caron (Eau de Toilette)" but I got bored with it. It's a comforting lavender vanilla, perfect for bedtime.
Yes, I do sometimes where a fragrance to bed. Just whatever I'm in the mood for, or applications of various different fragrances at different spots on my arms, and I'll cycle through the fragrance "buffet" until I fall asleep.
Gotten into the habit of wearing Le Male Le Parfum to bed (as when it's in my rotation) also helps calm my nerves and I generally get better sleep when I do wear and the times when I don't I notice it's harder for me to sleep, but I do have a possible contender to this and that's A*Men which is another fragrance I also find comforting I did spray it once before I went to bed and the results where quite interesting.
I rarely wear something for bed (although I wouldn't say I never did!)
But I usually try new samples on bloaters in the evening and if it is nice I will keep the bloater on my night desk, This way I get whiffs of the new discovery while falling asleep... 😊
Often i sniff the cap of some of my bottles before going to bed. I do also as someone posted earlier, test something on my wrist and feel what remains in the morning.
When i am alone, I would often spray 
The Dreamer Eau de Toilette or 
Nuit d'Issey Parfum before going to bed.
If I am with my girlfriend, I do that less, but if i do i likeThe Dreamer Eau de Toilette or 
Dior Homme Intense (2011) .
I don't have that habit. I find a freshly applied scent too distracting for sleep.
i love to wear perfumes or to have ambient perfumes in my room before bedtime...
Recently i love Plesir by Tonatto!!!
I like to wear 
Nº14 Whipped Almond Eau de Parfum, 
Midnight Amber Glow Fragrance Mist, 
Cloud Eau de Parfum, or a dupe of No. 5 when I go to bed. If it's particularly cold, I'll wear 
Dark Knight Parfum Extract. I used to wear 
Agar Parfum Extract for bed almost every night until I realized I had used 70% of my bottle 😬
The drydown of Prada black is very soothing. I think the only contraindication for a bedtime fragrance is it can be cloying in the slightest bit. It would be a constant background stimulation that you don't need when trying to sleep
I feel 
Valentino Uomo Intense is one of the coziest and most comforting scents to wear to bed. I do almost every night.
Tosca Eau de Parfum (or for bedtime, maybe better their EDT). Very comforting, soapy and a bit 'dreamy' 
Pleasant dreams !
I rarely do so. The following two are very clean scents and very mild - serve the purpose if you don't want something that stands out too much.
Stories by Lapidus - Sensual Hero
The Sensual Hero is especially mild and not long lasting. If you wake up in the middle of the night, it would be gone.
360° Red for Men