I just noticed...
Feb 28 2014 difficulty = 3,815,723,799
on Feb 28 2013 difficulty = 3,651,012
That's a 1,000+ times increase, so a 1 TH/s miner today is only mining as many bitcoins as a 1GH/s miner 12 months ago.
Over the same period the bitcoin price has only increased about 20 fold (~$30 to $600).
Let's hope this rate of increase doesn't hold up for all of 2014, or in 2015 we'll be looking at ~0.004 BTC/month from a 1 TH/s miner!
Ever wondered where do stars come from?!
Like our Sun? Alpha Centauri and billion of others?
All were planets like Earth with oceans, rivers, blue skies... until bitcoin showed up and turned every their atom into a hot burning mining rig!
Some of these celestial bodies were very successful and developed massive Block Eruptors which collapsed into their blockchain creating massive black holes in the process.
So, I don't think it will stop any time soon!