So unless you've got efficient hardware and dirt cheap electricity don't bother mining unless it's a hobby, you're better off just buying bitcoin.
+100 - THIS^^ should be written in every thread on this forum..I can't express is better by myself.
Don't forget the risk of bitcoin price also. A 10-20% drop means you will be mining at a loss.
yes. it is super risky stuff:), just because by buing mining gear, you are betting on price of BTC and for difficulty predictions. not even talking about fire hazard, robbery, noise, heat...and 34 other annoying things related.