We can't afford not having people on our side doing the mining; if honest miners don't hold the line, we risk getting screwed by dishonest ones.
Which is why ASICs are so good.
Common joe's can buy a one or two and join a pool.
90 ghs will be worthless in 6 months time . this is what i think. bitcoin will become what it hates the most!
Incredibly huge speeds amounting to absolutely nothing is exactly what will secure the network.
If mining isn't profitable in an individuals situation then they should spend the capital on bitcoins instead, that will marginally increase the supply of mining. So there is no loss and you it helps secure the network.