Ork warbikes seem to be having a pretty bad reputation in this edition. I've heard several people say that bikes are the worst unit in the ork army, or close to it at least. I've not played 40k since 5th edition, so if this is due to them being bad in comparison to last edition, then that's something that's lost on me, as I've got no idea how orks performed in 7th edition. But if viewed in comparison to other units in the ork army, they seem quite solid to me. They're not a "must have" staple unit, like boyz, but they seem to fill a niche.
A warbike costs 4,5 times as much as a boy. Which does not seem that bad, to be honest. With a movement of 14, 6 S5 shots, T5, W2, a 4+ save and choppas, they can lay down a good amount of firepower (and have a mean overwatch), and can fight most units that are not dedicated melee units in melee (with their high speed, they're also able to pick and chose which targets they'll go after). They're also a pretty good nob deliver system.
In all the games I've played thus far, they've performed well. While I would not take them instead of boyz, once I've got a comfortable amount of boyz, they seem like a worthy investment.
So why do people seem to think that warbikes are so bad? Am I missing something obvious here that makes them bad?
I've tried most of the non-flier, non-walker ork units, and the only real lemon has, to me, been burnaboyz (I've not tried Kommandos, but they look a bit too pricey for what they do, considering how hard cover is to come by in this edition).