It's not a choice, you don't really get one tbh, and "It's quite normal that you will lose" Of course it is, with teams of like 4 god people, 1 hit killing you. Also some people don't have anything to risk, if they can't afford it, and Take a look at most of the popular PVP servers, nobody uses god diamond, they use iron.
~ @Draqq
1)God swords don't 1-hit
2)Those PVP servers are KIT PVP
3) You are free to make whatever choice you wish, but you can't chose your consequences. Why am I saying this? Because it is your choice to jump or not to jump in the arena, but the consequences, which are sometimes obvious (ex: 4 god armor vs 1 stone sword) are not chosen by you, which in this case will probably result in a death.
4)Things like having 4 god armors on you can be played by both sides. You get some friends. You make money (which is VERY easy by working for 20 min and then selling your stuff to the admin shops). You buy some cool god armor and then BOOM! You are fairly matched with the pvp-ers.
Players shouldn't be forced to buy it.
~ @Draqq
As I said, no one is forced. WANT TO PVP WITH IRON? Go to CTF!