Why do all iphone 5 chargers break?

This is my 4th charger in 3 months of having the phone, i can't return it as i bought it second hand. I'm so annoyed i have to keep replacing it. Is there any way you can fix it or do something temporarily for it to work?

I have had the same problem. I've broken three so i feel your pain, and i think it may just be that the wiring going into the much smaller lightning connectors more fragile and easily breakable. What has happened to two of mine(one being from apple, and the other from an expensive name brand) was that the wiring on the inside of the cables would disconnect near to where the connector for your phone is, probably from pulling on it or having weird angles. But now i just have cheap extras at the ready that i bought off of eBay.
I'm using a noodle style cable now and it seems stronger than the others. Hope this helps.

I'm on my second charger since August. I had the original apple one but now I've bought one from the carephone warehouse for £15. It charges my phone so much quicker than the original. I'm expecting this one to brake soon someday though. If it's stopped working then there's no way to fix it.
My mistake is I pull it out hard from the lead not the plastic part at the top and the lead eventually twists and stops working. But sometimes they do stop working for no reason. My iPhone 4 was the same. I've lost count at how many of them chargers I went through!

It is something Apple definitely has to work on improving. Their durability.