The way I solved my procrastination problems is that I do at least one thing per day towards my goal. More often than not, this puts me in a mental state that leads me to doing many things. I find that simply starting a task is the most difficult step.
Well, there's some situations where it is so obvious to use debt that you don't need a cost/benefit analysis.
For example, let's say you discover a large deposit of gold on land you own. You could use debt to buy the mining equipment to mine the gold.
Another example is if terrorists demolished all the bridges between Manhattan and Brooklyn. The government doesn't need a cost/benefit analysis to decide to use debt to rebuild some bridges.
What I find astonishing is how someone who is astronomically wealthy wanted to marry a woman who is relatively unattractive. Although I guess that's just a matter of opinion.
Or perhaps you're the ignorant one? Are you saying Africa was having economic growth and technological development before the Europeans came? On the contrary, most of it was in a permanent state of poverty.