I the difficulty continues to go up 10% each time, then, no mining will not be profitable for someone getting in at this point.
We can, and have, argued what the future difficulty increases will be. I hope they level off soon, but I'm not optimistic.
However, if you are going to buy a machine for gaming anyway, and do some mining on the side, go for it. You don't have to recoup the whole rig cost to turn a mining profit, because you bought it to game with, not to mine with.
You just have to recoup the "extra" stuff you bought for mining that you would not have otherwise bought to game with.