Just by looking at the difficulty increases, it should be a clear indication that mining Bitcoin just isn't something you should be doing. People think that if you buy an Antminer you're all set and will quickly ROI, which isn't the case. Sure, eventually eventually you might break even and from that point generate pure income, but the earnings will be so insignificant, that it is barely worth the effort. If mining will be done anyway, then people are far better off building an altcoin rig than focusing solely on Bitcoin. Altcoin prices are peaking at insane levels, which is great for miners, but no one knows how long these prices will be maintained, so people buying hardware right now might not benefit from current levels for too long anymore....