+1, (1) (2) and (3) are very real problems in industrial software development.

I've been reading a lot how Twitter transitioned from an RoR monolith ("monorail") to SOA when they got big enough, it's a rough journey but I suspect many companies have to take it once they evolve from iterative prototyping/experimentation to correctness at scale.

I've also realized writing good, maintainable code can be done in any language, it's just that some languages (e.g. Go) make it much harder to write unmaintainable code for many of the reasons you've cited above. "Debugging my own undisciplined habits" really hit it on the head.