Its a really tough question. When you're sick, or have chronic pain, and the doctor prescribes something to help, then its something you need. Like De said about her mom, she may have become dependant on it, but that was because she needed it to get through the day. If you can't sleep, well, you need to sleep, so if you're taking something the doctor gave you, as prescribed, then you're taking it to help you get some sleep.
As far as the alcohol goes, thats the really tough call for me. I can't fathom stopping at 2 or 3.....so to me thats not a problem. But its for you to decide....if you feel like you can't get through the night without those 2 or 3, and if you feel like its not ok, then perhaps its a problem. Its a really tough call though, for us on the outside to make. It can sneak up, it did for me. I started drinking socially and then it was 2 or 3 and then it was needed to sleep and then I needed a buzz and then I needed to get drunk and then I needed to black out and then I got sober. So.....again, I think its really great that you're taking a look at it. Maybe try going a night or two without and see how you feel. If you go nuts and find yourself white knuckling it, perhaps you might need some help. If you want to cut it out completely that is. Keep talking about it and keep getting feedback, and see where it takes you.

Rayna