Why would anyone neglect to wear their retainer after orthodontic treatment?

Often, people are exhausted after their treatment and say to themselves, "Ah, I've had enough, I'm going to stop wearing my thread." 

But what you need to know is that if you don't wear it, your teeth will move. And if they do, you'll have to start treatment all over again. 

Talk to your orthodontist! There are options like wires that can be bonded directly to your teeth so you don't have to think about it, and it keeps your teeth aligned!