Can someone help me with this Mac problem?

After a while, the sound on my Macbook Pro stops working. I don’t know if it is a setting or a defect or what, but after as little as a few days, the sound stops working and I have to restart my Mac.
Here are a couple hypotheses:
1. I keep plugging in and taking out headphones from the jack.
2. I use audio very frequently.
3. It has been dropped at least twice onto a wooden floor from a coffee table. (Neither of those times by me, may I add)
Is it bad that my computer only sleeps at night? Should I be shutting it off? I’ve had my Mac for just under two years now, and it works fine. It’s a valued possession so I’d be devastated to lose it.