There are lots of things one can buy with Bitcoin. I have used it to buy airtime a lot when I was a newbie and still making use of the Xapo wallet then. I stopped after I did my last purchase and I didn't receive any airtime from them. Sent them a lot of mails telling them I never received it but they kept on insisting that I have got it.

That's when I decided that I'm not going to make use of Bitcoin in buying anything again and I also stopped making use of the Xapo wallet too. That's the only thing I have ever purchased and after since then I have never considered buying any other thing.