I do wonder what would happen when the coins dry up?

I hope I can get some mining things (a BitForce single or a cluster as Gfx cards use too much energy for what they give back to you-The HD5970s and HD6990s are an examples) so i can get a piece of the pie while the block rewards are still worth getting (50BtC,25BTC,etc). .I'll have to take out some (large) loans in future to help buy them then pay them off at some point in the future as I need to consider some things first (how many computer like things,can I fit into the airing cupboard (as I live in a place where very small budget like apartments are) without too much heat,noise,energy use as I hear of coppers busting ppl for using too much energy and to stop the neighbours  complaining about noise as I live next door to them)