I would always bring my own for reasons others mentionned but also because you don't really know how they stored theirs, if they expired, where they got them or what not.
Good point charmer, I had one occasion where the girl insisted on using hers. Putting aside a random crazy person, the only logical reason I could see for this was that she properly cared for her hats and couldn't guarantee that I had, so I was quite happy to use hers.
Curious what made you dig until 2014 though ?
If you're not "average" size, whether in length or girth, it's a good idea to have your own as backup.
Tip for the ladies: buy regular condoms and store them in an empty "Magnum XXL" box. Great for the ego of us guys when we see you pull the condom out of that box.....