Why do they make the crochet needles so thin?

I bought one in alu metal, 2mm some time ago. There is a flat area were they have pressed in the nr of the crochet. It get bent very easy. I have been careful with it, just because I know it is easy to break.

Now, I sat on the needle by accident and it bent in a 90 degree angle so I tried to get it straight again and it got weak in where it was bent so I broke it when I crochet.
I thought I don't want a crochet needle that breaks so easy so I looked on eBay and find this. So I bought them instead. :)

 I don't think this will break because of the steady handle. :)