Because you don't use it. I use it in vast quantity in oder to craft RE-battery for Solar Pannel (and to turn it into Iron on PvP servs when it's not forbidden/fixed ^^) and I get too much tin, but not up to use it as fuel.
Because 16tin to craft 64 cells to use it with a super high efficient Superfuel that will last you for a good fucking while is bad >.>
Dear god you people complaing about the shittiest things. (Including Solar OPness which im myself im included in that retardness)