BMX cranks on big bikes

what confuses me about all this shit, is going form road to BMX and skipping mountain bike stuff all together. If your road cranks are breaking, get some fucking moutain bike cranks. there are tons to single ring MTB cranks out there and you won't have to deal with the annoyances of BMX cranks.

Big wide Q factor to deal with big wide tyres though. Saying that I ran Shimano Saints for a while, worked out out