We have to stop using disposable cups to protect our environment. 10,000 cups are thrown away every two minutes in the UK, and 2.5 billion each year. The reusable cup is made with plastic lining, which makes it a little hard to recycle. Coffee places tend to hand out discounts for bringing in your own cup and reusing it, therefor you're saving money and it wont be going to waste. Throwing away one cardboard cup wont be such a big deal to you, but multiply that by how many you drink a year. Making a big difference to our environment will not only make it better but it will make a difference towards you just because you save a lot.