Saw this video about how to properly lay bricks and dang! It takes more skill and care than I thought. Then I saw a video about how foundations are poured into wooden casts from a big concrete truck and that looked easy. I also recently studied the building material costs around my area and concrete is a good deal cheaper per cubic meter. That raises the question though - why lay bricks if you can just pour concrete? Most buildings around here are made of bricks or cinderblock, while the only building with extensive use of concrete is the new library (and that is basically just a giant box of concrete and glass).
Those "big wooden casts" are called "forms", by the way. Very often brick is chosen over concrete for its aesthetic value. It's also relatively easy to double-wall brick for insulation purposes, but it's extremely difficult to pour two good-quality 4"-thick concrete walls immediately adjacent to each other.